Well, if you don't give a shit, I'd say that just shows what a lame brain you are. You don't care about the bigger society implications, all you want to do is bitch that you're not getting time off. And I imagine you are choosing to not have kids, unless you are single or infertile. So what differences does that make?
And if people stop having kids, humanity will go extinct. But I suppose you don't give a shit about that either, you just want a couple of weeks off aye? Well then, why don't you chose to quit your job, and start looking for another one 12 weeks later?