Full Idea
No species, ours included, possesses a purpose beyond the imperatives created by its genetic history.
Gist of Idea
The only human purpose is that created by our genetic history
Source
Edmund O. Wilson (On Human Nature [1978], Ch.1)
Book Reference
Wilson,Edward O.: 'On Human Nature' [Penguin 1995], p.2
A Reaction
This invites the question of what that purpose is perceived to be. Some people feel an imperative to play the piano all day, so presumably genetic history has created that feeling. Presumably we can also choose a purpose, even extinction.