Should I lose weight?

I am 5'6 and weigh 180 pounds. I've always been a curvy girl, but while in rehab I gained 30 pounds. Now I'm 1 year sober and don't need to eat to stay that way, but the habit of eating a lot of junk food is pretty engrained in me. My weight doesn't really have a lot of negative effects, I'm still capable of being active and I have a boyfriend who thinks I'm very sexy and doesn't mind the extra chub. But I still wonder sometimes if I'd be happier if I lost the extra weight. Thoughts?