Via Anecdotal Evidence, a demolition of the Cult of Kerouac in Another Side of Paradise by Anthony Daniels (aka Theodore Dalrymple):
He led a tormented life, and I cannot help but feel sadness for a would-be rebel who spent most of his life, as did Kerouac, living at home with his mother. He also drank himself to a horrible death. But while it is true that most great writers were tormented souls, it does not follow that most tormented souls were great writers. To call Kerouac’s writing mediocre is to do it too much honor: its significance is sociological rather than literary. The fact that his work is now being subjected to near-biblical levels of reverential scholarship is a sign of very debased literary and academic standards.
I have seen some of the most mediocre minds of my generation destroyed by too great an interest in the Beats.