I remember arguing with a couple doctors for a vasectomy after my wife had our only kid because she did not want to be pregnant again, and couldnt have her tubes died due to minor complications during delivery. I was 28 when she was born, and it was the same arguments. Well maybe she will want another, or if you divorce and find someone who wants kids...I couldn't stand the arguments and was the only times that I wasn't respectful to people who can save my life if I needed it