The high class motels we usually stay in have plastic glasses, sealed in plastic, thrown away after use...
I get to stay in those same high class motels and have discovered the "sealed" wrapper ripped open ever so slightly so that a "fresh" glass could be stuffed in and the wrapping re-used.
And in more than one motel chain, too. And more than once. Yuck.
Call me paranoid but I carry a packet of antibacterial wipes now. I'm sure to hit every switch, doorknob, telephone, alarm clock, remote control, etc. in the room that I might touch, just like Howie Mandel.