I'm just like you Lindsay, I don't even have to be hungry to want something to eat. Usually it is salty things, but sometimes it is sweets - there's just no telling.
Sandy, usually I don't keep tempting snacks in the house either - but sometimes when I'm in the snacky mood, I can eat plain bread and butter - it doesn't matter, I just have to put something in my mouth.
Sometimes I have so much willpower and I won't snack at all in the evenings for days/weeks. Then all of a sudden it will come on me and it's like I have NO willpower at all and I eat eat eat for days/weeks - I gain weight, then I feel terrible. It takes soooo long now to lose it. But when I'm in the snacking mode, I KNOW it will take forever to lose what I gain and I will be miserable - but I eat ANYWAY.
I think I am psychotic - or irrational, at least.