In a way yes we are perfect for the conditions under which we live today; nevertheless what I have read about is that they (the smart people) are trying to be able to learn how to modify genes so that when human beings travel to other planets then they will be able to change this Genetics needed for them to be prepared for those interplanetary travels. In short I think that we are perfect for the living conditions under which we are at that point in time. Thanks for your reply.