I used to hold this viewpoint until I watched a video (I can't seem to find it now) that made a pretty good point. The point was something along the following:

I used to hold this viewpoint until I watched a video (I can't seem to find it now) that made a pretty good point. The point was something along the following: "I like book stores. I like going in and flipping through the books. Sure, I could buy the book on Amazon for $4 less, but if I keep doing that eventually book stores won't be around. And I like book stores." Ever since then, I usually try to buy the book in B&N or wherever, provided that's where I am at the time. (Something like a campus book store and textbooks, however, is an entirely different case...)