I hate playing against humans and that's because humans can sometimes be cruel to me.
As history has shown again and again, humans can be quite awful to one another while a computer will always be kind and obedient and a computer will always do what I ask him to do for me.
For instance, a computer will never bully me and make me feel bad or sad.
That's why I enjoy playing a computer much more than I enjoy playing against people on the Internet.
Even if I play against Chessmaster 7000 and I set him to a lower level so I have a chance at beating him and I beat him almost every time (I can beat Chessmaster 7000 but only at the very low levels), I still enjoy playing against a computer (even a very weak chess computer) more than I enjoy playing against a human.