Donald Trump, like Howard Hughes before him, refuses to shake hands with anyone for fear of srpeading germs. I guess he doesn't handle many casino chips either for the same reason .... which is one of the reasons why I DO clean my chips before putting them in my binders. The other reason is the dirt, grease and grime do not discolor the 2x2 holders... and they look much prettier. Just a personal preference. Doesn't mean anyone else is right or wrong.