Why Are We Here?

I think this video and explanation are right on.

By the way, if you draw from this video the conclusion that humans will revert to apes by interbreeding, do not pass go. Do not collect $200. You missed the point and did not grasp the concepts. You'll have to think in terms of hundreds of thousands of generations, and in terms of the prevailing evolutionary processes involved over that amount of time and changes in environment.