Anyway one time I was trying to put evolution in a logical perspective. Well I was wondering why we evolve in the first place. I could think of a couple answers. They were: need, curiosity, and want for perfection, which is sort of falls into the second category.
Evolution occurs because lifeforms are imperfect replicators who sometimes die before they can reproduce.
There is no 'need' for evolution, it's just something that occurs.
Evolution acts on pupulations, which have no desires or curiosities.