do people bother to go on living knowing that, as a poet once said "Life's a bitch and then you die?"
As Camus said, life is absurd, and the only logical response to an absurd world is to embrace the absurdity and go on living absurdly. ('Absurd' is one of those words, that, when you hear it 4 times in one sentence, you realize it is, well, a really absurd sounding word. Like nipple.)
And what more absurd life is there then that of the artist?