It isn't the pain that gets me, it is something that has always been controlled by diet changes and the like. So for me, I felt it a unnecessary procedure if it was totally controlled by diet. On one level my doctor agreed with me, but on the other she really wanted me to have to so we could either confirm or deny the IBS diagnosis.
Since my unofficial diagnosis in the 90's diet control has remained true to form, if I avoid white foods I have no issues, if I give in well then like I said, I know my bathroom more intimately then I care to know it. LOL