i agree with you neko. but i believe in another interview he said he wanted to leave while he was still having a great time and bringing a lot to the character, and that if he didn't leave now they would have to pry the key to the tardis from his cold, dead hand. so i suppose he feels like he's currently at the apex of his career as the Doctor and that's the best time to leave. i do understand the idea and respect him for it, even though i also wish he would stay. then again, i still regret christopher eccleston, so i'm a bit refractory to the whole regeneration thing to begin with.
