Playing professional baseball is very competitive, and hitting a 97 MPH Fastball is no easy task. Like what Kyle said, it's very elegant and fun to watch while you're doing something else (HW).
I just don't like it as much as football and basketball because it is very slow, and can get boring, and it is rigged with cheating (roids). You can say that football is also with spygate, and basketball is with playoff fixing, but for some reason baseball seems much dirtier to me.