My stupid urologist told me prior to the surgery that only men without kids would regret it at some point down the road, which was my case.
Even my entire family think I regret my vasectomy because I changed my mind about kids. I did not!
I changed my mind about vasectomy because of the irreversible effects it causes on the body and the mind. Mine healed badly. I even asked the idiot doctor about how the pain should be after the procedure, if it was worse than having a wisdom tooth extracted. He laughed and joked. "No it was definitely not". I would heal much faster than that.
In summary, no doctor I ever saw told me anything about pain, granulomas, bad healing, scarring. Zero!
I'm a different person than I was before the surgery. That dude died last year. I'm self-conscious and have a profound distrust in doctors now. All thanks to vasectomy.
Physical and emotional pain is the true consequence of vasectomy. If they work with a margin of 2% physical pain, keep in mind this 60% emotional pain. The chances of somebody being fully satisfied are really thin.