I use hand sanitizer on my hands ALL the time for no reason. I don't know why. So techincally, yes, I do sanitize my hands before I indulge in food.
Washing my hands is a different case. Whenever I feel they smell the way I don't like them to smell, I wash my hands. Even if its my natural scent. Whenever I feel my hands are too sweaty or feel disgusting, I wash my hands... Things like that. Uhmm... and I wash my hands after I do my hair and after I brush my teeth, which are right after eachother in the morning, so I wash my hands, like, four times just in the morning. :|
Washing my hands RIGHT before dinner, though, most of the times I just go get my food and eat without bothering to wash them.