If you look around online you will find a list of the places with the most germs. Usually the kitchen sponge it at the top. I saw a thread once about people that get their jollies by masturbating or having sex and then deliberately NOT washing their hands and going out to touch everything possible.
In the end your immune system needs to be tough. As a kid my mom was always yelling at my brother and I to wash our hands. We would get out hands wet and that is about it. We survived and my immune system is tough.
Public bathrooms are almost always gross. I use common sense and paper towels are way better than the stupid germ blowers.