There is something to be said for familiarity.
It's always a nice thing to have.
It's a rather cold feeling when you feel like you're up against something completely and utterly unfamiliar.
(Before anyone goes and says - "actually, I think that's living in a bubble, it's better to branch out more" - I'm not looking to argue. Obviously I don't think one should live her life completely devoid of new things. But it's always nice to have something familiar sticking around, too.)