I totally agree with you! My mom has worked with the Housekeeping Department w/ the Hilton Hotels for the past 30 years and she's always taught me to appreciate those who clean up after your mess. If you don't leave a tip for the maid every day, at least take care of her at the end of your stay. These people work so damn hard for so little...the least visitors can do is shell out a buck or two a day...AT LEAST!

But damn, if you leave a big mess...do the noble thing.