Guilty, your honor!
I must confess that I do not leave a tip for housekeeping. It's just that when I'm in a mad rush every morning and the last thing I think of as I frantically run out of the room to head to the office is leaving a tip for housekeeping.

In the future, would I? Not sure. It seems everywhere I turn, I leave a tip. Cab to airport: tip. Room service tip. Restaurant: tip. Airport parking: tip. Cab back home: tip. That's a lot of tipping out of my own pocket. Tipping is optional so when the housekeepers complain they don't get a tip, it rubs me the wrong way.