Id rather have the accuracy of a controller
The larger issue is.... I'd rather use the right controller for the right job.
For some games, motion controls are great (Wiimote + Wii bowling & golf, for example)
For some games, a game controller is great (console platformers & action games, JRPGs)
For some games, mouse & keyboard is great (FPS, RTS, western RPGs)
I'd much rather use the best tools for the job, than have to deal with "Hey, it's The Next Big Thing!?" shoved into every new game even when it's terrible. (lots of Wii games, for instance)