Is it the cancer risk that has you concerned, or are the symptoms of reflux not well controlled despite the PPIs and lifestyle modifications?
If it's the cancer risk - well, it is true that the chances of progressing to cancer are slim. A random woman is more likely to develop breast cancer than someone with GERD developing esophageal cancer. And if you're having regular scopes, if there was something going a bit wrong, it would get noticed before it gets out of control.
I'm 29, and my specialist didn't have any of those worries. If anything, I was told that being young was better for surgery since it would be I would get the most "life" out of the wrap, and it would eliminate long term dependence on medications. I was advised the wrap *might* become undone later in life, but he didn't seem especially worried that it would happen. If it happened, he said repeat surgery wouldn't be a problem. Obviously it could be a tad more involved than doing it a first time (scar tissue, adhesions, etc), but he didn't think it would be extremely difficult to redo if it came to that.