MTF, right-handed. Well, almost. It depends.
I am unable to write with my left hand (except on a board, and even in that case...) and I am clumsy using a mouse with my left hand, however I do everything sports or housework-related, and many daily activities (eat, manipulate XYZ thingie) with my left hand, and I think I actually use the left more.
I've always tried hard to use my left hand as much as possible, because, uh, I have always had this weird feeling that being left-handed was better. It felt more feminine for some reason. Anyway.
Maybe, if I'm not alone to "feel being left-handed is better", this feeling could be investigated.