| It's not common, but there are cases like this: Here a women took a use condom form the trash to get pregnate.
https://www.bbc.co.uk/radio4/womanshour/2003_07_thu_01.shtml Women Forged a signature of her ex-husband at an IVF clinic that had his sperm, and he still had to pay child support.
https://www.telegraph.co.uk/news/uknews/8544783/Woman-had-tw... There are numerous other cases like this, not common but it does happen. Lying about birth control is similar, but harder to prove, but even in these blatant examples men are still forced to pay child support. You can't argue this is even just? Edit: also looking there are some cases just as blatant as those two that have happened in the US. Not common, but it does happen. This is why I think child support should take into account the circumstances. Edges cases are always a thing in real life. A hard rule of a man must always pay child support is not good public policy and unjust to those who are victims of such things. While lying about birth control is more murky it still should not be something we condone, and if there is proof of it and not some she said he said battle I think family courts should to take that into account. There also cases of sperm donors ending up on the hook, for child support, not common if the clinic is doing things correctly, but it does happen. There also cases of underage boys who end up on the hook for child support, despite what happened being statutory rape. This is insane.
For example: https://www.usatoday.com/story/news/nation/2014/09/02/statut... |
https://www.census.gov/newsroom/press-releases/2018/cb18-tps...
But ultimately, the child is the most vulnerable party in question. Yes, our legal system is geared to protect them first. It's not the best outcome for either parent. But the kid comes first, because the kid is the most vulnerable and has the greatest potential for societal harm/benefit.
Those cases are bad, yes. Are they statistically significant? Citation please. Men lie about having had vasectomies, too, to have unprotected sex, resulting in unwanted pregnancies. Frequently? I don't know. Guys sneaking their condom off is pretty frequent in my experience, though.
* note the gender neutral term. There are quite a few deadbeat moms too. Single dads need child support too.