Reread your original comment. You literally were arguing about the birth defects of having kids, and your first sentence says it has nothing to do with the morality of it. Read your own words. Your last sentence argues that it just doesn't work out to not have kids. I'm arguing it isn't that difficult to not have kids. LOTS of couples choose not to, and succeed. Since you're clearly a tool, NOW you're saying I should never have been born because you're trying to gaslight me into believing we were discussing the morality of it THE ENTIRE time. Lolololol. I'll just copy paste your original comment.

"It's illegal not just because of morals but also because of the much higher incidence of birth defects which would be absolutely massively compounded by them being twins. As much as someone might say "but they could just not have kids"... How well does that ever work in the real world?"

Before you comment, "but but but you said vasectomies are foolproof!" (I can hear you mewling as you wipe the Cheeto dust from your chin) all I said was that they exist. The implication being, they are a good tool to help say child free. Not a 100% foolproof, but when used in conjunction with other methods, can be effective. So to answer your initial moronic question of how well does it actually work in the real world? Just fine, if you take multiple precautions, and use contraception correctly. And yes if you got a vasectomy, don't test your sperm regularly, and just assume you can cum inside for the rest of your marriage now, you are indeed playing with fire. I never said otherwise. You dumb