That's a good point. I suspect, though, the Buddhist will insist that our concept of personal maturity is still egoistic and therefore self-destructive. The mature person who's learned harsh lessons by trial and error and by suffering from failure only becomes more of an egotist (a proud individual consumer, for instance) who's locked into illusions. The harshest lesson is supposed to be the Buddhist's, that the personal self doesn't exist, that all our conceptions are empty in so far as they posit independent essences.

But this is something that intrigues me too: the contrast between these ideas of maturity (mystical enlightenment vs something like civilized, liberal secular humanistic maturity).