Firstly, I would phrase the value as "People should not be restricted in the roles they can fulfill in society" (I don't think anyone serious(ly) argues that ev

Firstly, I would phrase the value as "People should not be restricted in the roles they can fulfill in society" (I don't think anyone serious(ly) argues that everyone should do exactly the same). And no I don't think that this value is under threat from other cultures just because they reproduce more. The value didn't get established in society because the people who held it reproduced more. Also, those who oppose it won't necessarily continue to reproduce more forever. Atheists have smaller fertility rates than any religion, yet atheism is spreading more and more