Never, and I've never tried. Believe me, I'm way too far gone psychologically and socially for it to ever happen unless payment is involved. The way I look may actually be one of the lesser concerns. If I lost all the extra weight and put on some muscle definition, it would be like putting lipstick on a pig. I may still do it, but not for that reason.
Post a picture of yourself. Lets us judge if you have no chance physically. I doubt it is now as bad as you think and it could be improved. The psychologically and socially stuff can be improved with practice and getting the right kind of help. Cant just give up