I love making people happy. Ever since I was a little kid, I would be the class clown just because I love to hear people laugh. I grew up wanting to be an actor/comedian until I was about 10, because I loved the look of happiness on people's faces when I told a joke or something. Then I got into magic, because not only are you entertaining people, you are giving them a moment of their life that they will probably never forget. So for me, it's making people happy. Magic is the best upper.
Also, I like knowing how to do things others find impossible.