Sometimes the world doesn't change enough to keep me interested.

You sit around thinking "When is something big going to happen? I'm feeling rather bored." And something big does happen, planes fly into buildings, waves wipe out islands, and that keeps you depressed and interested for a few days and then you're thinking "Boring, I'm over this disaster."

I wonder if I'd get bored if I was famous.

Actually I don't feel bored often, I think I'm just not often in a state of over-interest or hyper-awareness. (Maybe hyper-awareness isn't the word but it sounds good)