Even vasectomy is not perfect. There is risk involved with the procedure. You're likely going to get a lecture regardless of how many kids you've had, and if you've had zero be prepared for outright refusal by many doctors. There is also some stigma attached to it. Some women find a man who's had a vasectomy a turn off.
I did the chop, and had I wanted more, I would have frozen some sperm. The procedure itself is also reversible. Considering the cost/benefit ratio, and the risks of male vs. those of female sterilisation, I consider not doing it selfish and boorish.
Well I did experience pushback when I had my vasectomy at 22 with no kids. I've also read of men with multiple children getting lectured about the procedure.
It is potentially reversible, not 100% reversible. There is a huge chance you'll be sterile for life. Some men also report post-vasectomy pain syndrome.
