CS isn't the only thing you can learn at college. If you feel you can learn CS much faster on your own then major in something different like advanced Math, Business, etc. It will make you a more rounded person.

I got my BS degree in CS 8 years ago and although I learned some stuff from my CS class that I probably wouldn't have been exposed to if I learned on my own (like assembly, db query tree optimization, or 3d graphics).

Sure I might have learned those on my own; but I probably wouldn't have given that if I wasn't in college I'd probably be churning out business apps for a megacorp or something leaving little time to explore.

I think my time in college would've been better spent majoring in Business and then learning programming on my own. That would've given me a better edge in the startup world. But it is what it is.