Guess mankind has just developd the outside world in a fast pace through the centuries. The development of ourselves and on how we must be is probably still in a early phase. The instincts we have are no different from thousands of years ago. Maybe mankind should devote more time to research what else is out there between the dimensions and what the eye can not see.
Agreed... you'll never understand anything "outside" yourself until you understand yourself. So the path to understanding is "inside". I put those in quotations because I understand that those are only relative concepts that have no basis in "reality" (don't really believe in that ultimately either).