I'm in a very similar situation to you, I've been in a flare since April this time and nothing has worked. I've actually had my second meeting with the surgeon to talk about
surgery, I've decided enough is enough for me and I'm going ahead with surgery. I also spoke with the stoma nurse and she releaved a lot of my anxieties around surgery. I should hopefully get a call in the next few weeks with a date.
I've spoken to a few people on forums like you and asked for the good, bad and ugly! From what I gather it's a big step and initially recovery may be difficult and a bit of getting used to but, yes they have all said they had wished they had done it earlier.
I hope thats of some help!