You're supposed to have fiber every day. It's not going to hurt you to take fiber half as much as that surgery is going to hurt.

Imagine trying to poop with stiches in your butt...YEOWWW!! My father had this surgery, he was in major pain. Have you ever seen a grown man cry? I have. It was horrible.
On a more serious note, you may want to speak to a doctor about your options. If you only have a couple, it might be ok to go ahead and have them fixed. They can only fix so many before you risk having a condition where you lose some control.
If I were you, I'd leave well enough alone and take my fiber.