I'm going to contradict a lot on this thread. I lost 4 stones (years ago), went from size 16 to 8.
One of the few positives was cheaper bras.
Women were more negative to me as they saw me as a threat to their relationships. Boyfriends got jealous & possesive easily.
I felt more vulnerable as I wasn't 'big & strong' anymore.
Friends didn't want to go out with with because guys would approach me and ignore them.
I was treated like a dumb bimbo.
Now I'm fat again no one sees me as a threat. People say nicer things about me.
Losing weight is good for health reasons but I wouldn't do it for social reasons.