I have absolutely no clue why people do this. Just seems to be up in the air who decides to stick to the plan or not. Some people I have seen see they are "fine" after a while and act like nothing is wrong with them. Though common sense says you have to eat right to stay fine. My MIL was on a pretty strict diet that I have seen slip out the window slowly. My ex FIL threw it out the window, he went blind before his death. But go figure my step dad has done very well sticking to healthy eating.

Maybe since he is OK for the moment he is just treating himself to some splurging? Have you asked him to cut it out yet or asked him why he is doing this or if it is just short term (like getting a wild hair out)? I know many just bear with healthy eating and it is hard for them when there are so many greasy, fatty, and sweet goodies for the taking all around us.

Hope hubby doesn't drive you up the wall and that his splurge is short lived!