I don't wash my hands if a public restroom only has air driers
Why don't you like air driers?
It's the people spitting on the air drier after using it.
It is okay not to dry your hands but it is not good not to wash your hands at all. It could make you and others sick.
I'm very clean. Do you have any proof otherwise?
I don't have proof of you personally making anyone sick, but it is a scientific fact that germs spread to our hands when we use the restroom, no matter how clean we are.  I have never seen anyone spitting on an air dryer, but if you are concerned about germs, you should wash your hands and then let them dry as you leave, or carry paper napkins.