I think about fanaticism - oblivion awaits, especially for minor writers, so you have to be a fanatic; you have to be a crank to keep going, but on the other hand, what else would you do with the rest of your life? You gotta do something.
What we think we are surely going to do, we don't do; and what we never intended to do, we may one day notice that we have done, and done, and done.
If ideas are what feed serious literature and arresting language, who today is writing a novel of ideas (which can often mean comedy)? I think of Joshua Cohen. Who else?