Are you being treated by a doctor? What is your diagnosis?
You should not be taking laxatives if you have diarrhea up to 30 times a day.
The surgery itself is no more or less dangerous than any other surgery; every surgery has a risk but they are rather minimal, usually. Your surgeon would explain the risks to you.
Have you seen a GI or colorectal surgeon in Calgary? The doctors operating out of Peter Lougheed hospital are great.
I had severe ulcerative colitis and asked my surgeon what would have happened if I had not had surgery. He said I would have eventually gone from 20 times to 30 times a day with diarrhea, run the risk of my colon rotting out, run the risk of perforation of the bowel, run the risk of death.
Surgery seemed rather "harmless" to me over those risks and I didn't have much quality of life, either. I was in pain constantly when I wasn't on the toilet or asleep.
Best wishes to you.