See, I didn't see the Rose/Human!Doctor thing as a happy ending at all - kiss or no, she obviously resents having a cheap copy of the Doctor foisted on her, and sooner or later he's going to resent being thought of as a cheap copy. Maybe they'll work it out, but the odds that they won't are at least as good.

And yeah, the Doctor being against violence is all very laudable, but unless he can provide a viable alternative to violence, it's not much use when the Daleks are about to eliminate life as we know it throughout the cosmos.