I am about 5 years post-op and definitely regret it as well for mostly the same reasons as SleevedK above. Yes, I lost quite easily at first but that only lasted the first year. After that I could not lose anymore no matter what I tried. The worst thing? I am ALWAYS hungry. Before I had VSG, I had done low carb/keto for quite awhile and lost well and had a lot of energy. Part of that is eating plenty of fat which keeps you full. Unfortunately, after VSG I could not eat much fat. Protein first of course, but if I had too much fat I'd get sick. I also LOVE vegetables and can no longer eat much of them. I fill up quickly at a meal but am starving an hour later.
I was told that at least in the first 6 months or so, hunger would never be a problem b/c the part of your stomach they remove is where the hunger hormones are secreted and that eventually that would come back. I was hungry from day one and it never changed.
The biggest disappointment to me was that I did want the bypass. I went in for surgery and woke up to find I had nothing done. Doctor tried but could not pull my intestine far enough forward to attach it without stressing the incision. I went on a liquid diet for a month and lost 22 more lbs, tried again with the agreement that if it still wouldn't fit, he could go ahead and do VSG and that's what I woke up with. My surgeon has a very good reputation and I trust him. My body has always done weird things. Not sure if it's just all the fat in the omentum around the intestines that was the cause or adhesions from my previous gallbladder surgery, although he did say he broke down some of those.
By 3 yrs post-op I'd not only not lost anymore but started regaining. The regain is totally MY fault, not the surgery, but I was so tired of fighting to lose with no results that I began eating junk food again and it crept up. All told, I lost 85 lbs and regained 28, and have been sort of stuck there. I'm now revisiting trying to do low carb since it works for me once I get past the initial cravings, etc.
I had some GERD prior to surgery but it went away with the weight loss, only to return with a vengeance after i began to regain. It is MUCH worse than it ever was prior to surgery. I have not had an endoscopy to see if there is a hiatal hernia or anything yet; it's on my list to get checked out soon.