It's a weird thing to put in a dating profile, but if you did put in there that you are open to dating women who have had medical procedures or medical issues that prevent them from having children or women who don't want children, you may get some takers because of that on some websites. In some parts of Asia, such women may consider themselves in low demand.
"i'm going to focus on european countries with over 24% atheists. this seems like the best strategy to me."
The US may be the type of country who would have the type of women you are interested in, too. I'm not sure where you are, but it sounds like you may not have to go abroad to find it.
another issue is that women who have medical issues making them sterile aren't going to be so healthy. i don't want to be with a sick women. additionally, i work out a lot. my health is important to me, so ideally, i'd like to be with a woman who takes good care of her health, too.
i live in the US. I hate it here. women have more power than men due to feminism. additionally, there are 6% atheists here. the US has puritanical (religious roots) and it would be highly frowned upon to tell people that you don't want to get married or have kids. i know you're trying to help me out with your comments, but the whole point of this site is about getting away from america, right? so i'm definitely going to investigate some other countries.