I don't think you're the only one who has done this Mizzuno. Part of it for me was doing something naughty, a 'if I'm not going to drinking I'm going to eat what I like' attitude. And part of it was physical in that I was ravenous when I first got sober. I'm a bona fide sugar addict now. My major problem is mints. I probably spend as much on them as I did on smoking. Money is another factor. I felt like the money I was spending on drink was burning a hole in my pocket so I would spend it on nice stuff to eat. Also Junk food is the only thing I don't associate with wine, so for a while it was my only 'safe' food. Well, they're my excuses anyway. It is something I am aware of and fully intend to tackle, bit like I did with drinking for years and years
