Yeah we nerds know our math, and gambling - especially slots are not a good proposition. (unless you really get value from the enjoyment of playing them, and of course some do.) Plus you end up pretty busy if you are working the show.
I do like low limit craps and sportsbook betting. There is something really nice about walking up to a counter and saying "Fourty bucks on Phillidelphia" and sitting down with a cigar and watching the game on a 22 foot screen.