When I was a college freshman 24 years ago I spent a lot of time reading Ringworld, Dune, Asimov's works, etc., and eventually I was warned by an older guy on the floor that a past roommate of his had to drop out because all he ever did was sit around reading SF novels.

Did I curb my reading? Umm, not really, though I doubt it's the reason I got a 0.0 in Calc I since I still spent several hours every week trapped in a cubicle in the math building, trying to solve problems that made absolutely no sense to me. When it became clear that I was getting nowhere even during my second shot at the class I dropped out and got a BA at a more "local" college, and after decades trapped in the service industry I'm quite certain I'd be in the same spot I am right now if I'd just spent all my college money on a trip around the world and a really nice car.

So beware of books, too, and don't forget to laugh at the end of "Cable Guy" when you are beat over the head with the message that sitting on your ass reading a book is so much better than sitting on your ass watching TV!