I think everyone worries and wonders if this is the right thing to do. I had a BMI of about 38 and was perfectly healthy, so I wondered if I would ruin my good health (and my wallet, since I self paid) with this surgery.
In the end I decided that I wanted to live the rest of my life in a normal sized body, without doctors telling me I should lose weight every time I saw them. And without feeling self conscious every time I went shopping, went swimming, looked in the mirror, etc.
I had surgery a month ago, and I feel great (26 pounds down)! I have had such an easy time. No nausea, no throwing up, no issues with food of any kind since I left the hospital. And I don't care about food - at all. I forget to eat sometimes. I am free.
So for me, this was exactly the right decision. But I did research it, go to seminars and browse this and other forums for two years before I decided to go forward. Just make sure you know everything you can know about the surgery, search your soul and find your answer. I will tell you that you won't miss eating large amountsof food. Food becomes a means to stay healthy, not a crutch or a way to pass the time. And food is certainly not a compulsion anymore - I thought I would NEVER be able to say that.
I will tell you that it's difficult for me to not say "DO IT, DO IT!" to everyone who asks the question you asked. This is the best thing I have ever done for myself. But we are all different and this is a very personal decision. Think long and hard - read these blogs, the good and the bad. You will find the answer that is right for you.