One would think that, but I'm pretty sure (99.9%) that of the women who say they don't want kids, 100% of them will change their mind eventually. That's what happened to me with my 1st girlfriend. She supported me getting my vasectomy one day, and then the next she decides she does want kids after all (even though unfortunately for her she has an extremely low likelihood of being able to have kids due to her PCOS).