Lana:
I don't think you'll find many people post about regret. Not that they would be unwilling, but if they truly regret, they'd probably leave Susan's.
I've been here a few years, and while there have been some that were initially unhappy with the results, they came to at least accept if not embrace their decision.
To my mind I only recall one vocal member who decried the results of their surgery. She claimed that she looked like a firecracker had gone off in a pound of hamburger. She had been told by one and all, including her surgeon, that she would look like "Franken-pussy" for a good six months before the swelling went down. She expected too much too soon.
But even that wasn't so much regret of having it done, so much as regret that it didn't live up to her high expectations.
I might ask, why you are asking? Are you fearful of getting the surgery and then having buyers remorse or something like that? If so, it is not an unusual thought. I think we all go through that. I had a bit of that myself. I had attained everything I wanted in my transition. I was viewed by society as a woman. And who would be seeing my goodies except me. For me it was just the frosting on the cake.
Until I woke up after the surgery.
And then I felt completely and irrevocably female. And from that point on, I had no regrets at all.
-Sandy