If you've done what you need to do, you need to go bury yourself, because what else are you going to do? I think that that's where life stops.
Most regular superhero books are designed to go on forever; of course, very few of them do, but the point is they are trying to throw mud against the wall and hope it will stick, and most of it slides off.
I come from an art-school background, and I still feel that in my music, it's about exploration and challenging myself, about putting myself in a place that's frightening because I haven't been there before.