Good luck with making women want to be childless. That is highly unlikely. You might have some success in reintegrating the larger family structure so that its not a choice between absolute loneliness or coupling.
It's not as hard or unlikely as you'd think. I'd have to recall where I saw the studies, but the desire to be childless or to have fewer children has been on the rise (at least in the United States). Doesn't matter if we're talking males or females - this isn't just a female-only issue. Working at a university, it seems from random chats with students that they really don't regard "coupling" as equating to "breeding" these days (or marriage, for that matter).