Okay, I'll be honest and answer yes, even though my friends and family have made fun of me for years for doing this. I got tired of seeing ripped or dirty sheets (I typically stay at Marriott, Starwood or Hyatt so these are decent properties) and just didn't like the thought of hands cleaning a bathroom and then changing my sheets.
I'm a little OCD about the cleanliness of hotel rooms, and the more I stay (I average about 150 nights per year), the worse I seem to get!