My op was cancelled in Dec 2011 just as I was walking to Theatre, I had the rescheduled procedure in Jan 2012. A few extra weeks to wonder if I was doing the right thing, I had fears disguised as doubt even as I climbed up onto the operating table. It's natural to fear death when people are going to render you unconscious then operate on you - but that's their job, their speciality. The surgeon and anaesthetist are experts who don't want you to die, they want to help you live a different life.
I really didn't like the anaesthetist on the day of my op, he was talking about all the risks (because he had to) and I said 'if I die, I die. I will be asleep anyway' at which point he nearly had a seizure as he exclaimed 'oh my god, you're not going to die!!' He was just going through the motions about the risks of anaesthetic. I was lucky, apart from my size I had no other real problems.
I disliked him so much that as soon as I saw his smug face and heard him saying 'Donna, Donna, it all went well' as I came round, I promptly had a fit of my own! Did I die? Nope, not even close, I've really started to live again though! Do I know of anyone that has died? No, and each person is different and people die from bee stings, eating nuts etc!
I wish you luck with whatever you decide is right for you x