posted on Dec, 8 2006 @ 09:10 AM
Very interesting question and one that I have contemplated a time or two. In my opinion, humans exist to counter-act other acts of nature. But I also
think that you can't strip it down to 'why do humans exist'. It has to be larger than that - why do animals exist?
For example, in order for a tree to survive, it must have carbon dioxide available. A tree then expels oxygen. In contrast, a human must have oxygen
to survive, and expels carbon dioxide, which the tree needs.
Pulling from this, procreation is simply a method to ensure that humans continue to exist so that carbon dioxide continues to be produced so that
trees can live and so on. Admittedly, a very, very simplistic example, but I think you get the idea.