Washing hands is not fun, not usually. Getting sick is less fun. Getting sick because someone else didn't wash their hands happens ALL. OF. THE. TIME. It happens to you. It happens to me. It happens to folks with even less immune protection than me. I won't even tell you the horrid things I have learned from working in food safety land. Let us just say...the mayo in potato salad isn't the biggest food safety thing you should worry about at the party.
So, of course, at least I, would like for better handwashing habits to catch on like wildfire. So would the folks at Iowa State University Extension. They currently have a survey about which handwashing billboard you most would like to see, so go wash your hands and VOTE for your favorite.