Have you noticed how many restrooms now have trash cans located next to the exit doors? This is so you can use your paper towel to grab the handle of the door as you leave, so as not to expose your just washed hands to the germs of people who have just used the facility and DID NOT WASH their hands afterwards. I cannot tell you how many times I have witnessed this in the men's rooms.
I'm not sure which is worse, those who don't wash their hands, or those who dry them without washing them. Get the idea? Sadly, the second happens way too many times.