No one made you go be a garbage man. If you find it to be such thankless work then find something else to do. If you need a big warm and fuzzy pat on the back from everyone all of the time you picked the wrong career. While it is a nice gesture, I don't believe it is necessary to thank anyone for doing a job they are getting paid for. Thats what makes a job a job instead of it being charity. What a bullshit ad.

http://www.youtube.com/watch?v=68q28r7m_FU