I like driving. I bought a new civic that I've owned for 7 years, and I like driving it most of the time even though it is slow. If you've ever driven a sports car, the feeling of speed and power is fantastic, plus I love to corner quickly and my civic suspension isn't getting it done.
I guess the simplest analogy is that if you want to watch a movie, you can watch it on a 19" tv with the speakers in the TV, or you can have a 60" plasma with surround sound. You can watch a movie with either one, but if you really enjoy movies and have the money, you'll be watching it with the better picture and sound. Same with driving. If you don't really care about driving and just want to transport yourself, then it would make buying an expensive sports car worthless to you.