I think it is reasonable for anyone to try this, but would recommend that they have an IV placed and sort all the paperwork for the anaesthesia anyway just in case—I tried this and had the opposite experience to yours.
Yes, you are absolutely right. Not because of discomfort which is more of an inconvenience, but because having any kind of procedure without an IV in place is DANGEROUS! If you don't have an IV, this makes it very difficult for the anesthesiologist to act in case of problem, i.e. you're in deep sh_t.
Many people died on the table in minor anorectal procedures in the past due to bad parasympathetic reactions.
Many people died on the table in minor anorectal procedures in the past due to bad parasympathetic reactions.