You do work, don't you (or at least are in school)? Do you do it for sheer fun? Or to be able to afford things that allow you to survive?

Even those who do something like art "for fun" do it because it sates an internal need (not all actions need to make sense, because the inherent randomness of evolution is messy and leaves artifacts). Though also the desire to create some form of legacy can be considered a kind of survival: to be remembered by others beyond one's own lifespan.