In the past we were living close to nature. We had to haunt for food, just like the animals do now (pe lions). We trusted our instincts then. Listened to them. If we didn't listen to the instinct we would get killed. How did this change? What was the cause for us people to ignore our instincts and feelings? So we could create problems and blocks and pass them through to further generations?

I'd be interested to see the scans of some other people on this. And it's a fun question to save for a Q&.... at some point.

FIrst if all we started living closer together. So some the energies of people started to mix. Specially the more coarse ones. They close themselves in houses and move away from the cleansing woods. The plants on this plant follow the natural and part of their function is to process and transform lower energies. It is also part of our function but we do it (if we follow our path) several octaves higher. By processing energy we also create waste products (energy wise I mean). Those are the energies that get stuck and are no longer eaten/processed by the plants (not enough plants too much waste energy).
Everything someone consciously repeats three times of more becomes a pattern. Now in a city people had similar goals (protection from outsiders, social circles, resources etc..) but also similar restrictions.
The human race has been evolving since ages, which is indeed visible from the places they lived in. The groups grew bigger, the general energies got a little bit finer, the intelligence grew. But this has a price, the fine tuning to what is around has diminished (partly only!).
So we lost a lot of awareness to what is around us, we generally lost the ability to interpret our sensory (and extra sensory) input. The finer ones were the first to go. Instinct is connected to the finer senses, since they became dulled, the instinct became dormant. With all the people around us and due to social pressure we adjusted to this. Next to that there has been ages long of repression where a small set of people always controlled a larger set of people and told them what to do or not do, what to feel and not feel, what to say and not say etc.. The greater group of people then agreed with this, they were threatened by the smaller groups with death (so they actually used the way instinct works). So again a reasons why people started going against there instincts.
Now the intersting part of this if you look even deeper is that this process (however weird it is) is actually forcing the human race to progress to another octave. Where in the past there were only very few enlightened people, now there are a lot more.
The human instincts were in the past at a lower level (frequency wise) then they are now (for a trained person). But those instincts were more accurate. So now we can sense a lot more and at a higher level (IF we work for it) then has ever been possible.
Your basic instincts still work, they need training and people need to learn to listen to them anew. For example in leyline running in the woods you'll quickly notice that your instincts work quite fine if you dont interfere with them If you do you'll trip and fall. If you let them you run at high speed along the ley lines for half an hour easily.

Now we have an instinct on various things where we were not able to use the instinct for thousand of years ago. So the instinct is evolving..
Yet there is so much more that influenced how we use the instinct. It is impossible to sum it all up (hence my minor chaos in typing it in, I can not type so fast).

I'd like a stab at this one.

To me it seems that people lost touch with their instincts in several steps. The more people evolved, the more they started using their heads instead of their guts. Cavemen found out how to make fire to keep animals away so they could sleep. At some point people were able to make reinforced houses to offer protection from environmental hazards. They also learned how to harvest their own crops, create weapons, herd animals. Large groups of people eventually came together in primitive villages, seeking protection in numbers and the many also provide a larger amount of resources like their crops.

This slowly evolved to large cities like we have them now, isolated in our stone jungles and metal cans. Nature is no longer close to us because we slowly abandoned it for the security and comfort/luxery of the city. With large groups comes a leader, of course. We foresook nature for society, and slowly, most people only listened to what this leader said. We became the sheep led by the single dog. We had no sense of our own, since we had to follow the dog, or we'd be left behind.

Eventually, this society of shepherds and sheep lead to us no longer wanting to be close to nature because that seems barbaric and primitive -- as has been said by those with material power. So we do not seek the connection either. Animal intuition has also disappeared along with nature, because we no longer wanted it. There is no danger any more from lions, and we rely on the police force or similar to protect us as they see fit, should something happen anyway.

Next to that, growing knowledge lead to culture and a luxurious lifestyle. We simply forsook the creepy, unknown nature with the many hidden dangers as soon as we knew how safe and falsely reliable society could be.

In short, fear from the unknown, and society's influence -- in increasing steps, slowly changed our system from gut-based to mind-based. Not to say that all intuition is lost, of course. Society still shows this because of the rational fears like spiders, big animals, death/unknown things, ect. People still feel automatically that some things just are not right and are not safe.

(this is all pretty much written down as soon as i dug it up, so there may be some rambling/repetition. but i feel this has an amount of truth to it)

Are in the past really following their instincts more than mind? Were there less following society rules? Looking back in the past rather show, that right now people have more individual freedom. In the past societies were much more formal and strict. And look at the tribes: everyone has role, was ascribed to sth, there are casts or other forms of organisation. There were no such thing like individualism (maybe except artist, but it is also some form of ascribing). And don't think that people lost their instincts, they are still working. Think reason of it are those guys: http://en.wikipedia.org/wiki/Age_of_Enlightenment And are we really lost instincts? Or we are just using them in different way- we don't need hunt for the food right now - we are mostly hunting for money. Instinct it is sth we are not aware of. It is just there. Science shows, that for men more attracted are women who are fertile. Women still choosing men who had power, or money, so their kids will be safe. Instincts are still there. We are part of the nature, and we still following nature's rule, even if we are not aware of them. Different matter is intuition. We - as a western civilization - were learned, not to trust unmeasurable things. But think it is also part of getting awareness as a humans. Sometimes you must move little back, to move forward.

I remember a time, long ago by human standards, but recent in a galactic sense, when others came and meddled with human DNA, creating homo sapiens (the early ones) out of homo erectus.

It was in this that the link to the rest of the world was lost. This is the mythical expulsion from the garden of eden.

It was a necessary transition.

It wasn't until our meta- sense were cut off that we could be begin to develop the left side of the brain, the more conscious mind. (possibly ref Jaynes _The origin of consciousness in the breakdown of the bicamarel mind_). Now that it is so much more developed, we need to re-awaken the meta- and bring them both into harmony.