I think addiction is certainly part of the problem, as is easy availability. However, I do think it may run deeper then that. I think I have used food (especially sweet food) to comfort me and feed my emotions.

That realization is pretty powerful. I have those problem too, that food used to feed my emotions but when I started recognizing that, I stopped seeing food as a way to channel my emotion. I don't really do sugar but savory food might kill me too haha. That being said, good luck on your diet :)