Irrelevant. It’s still about choices, especially for those well-enough off to agonize over overpopulation and the environment.
Agreed, and the overpopulation and eco-nut reasons are just excuses that sound good over a cup of Starbucks with your trendy friends. However, one of the first choices that any man or woman has to make in the breeding game is to find a suitable partner. It's way easier for a good man to find a good woman, than it is for a good woman to find a good man. That's especially true if that good woman wants to get started with a family while she's still in her twenties, at that point, most men who haven't been taken are still on some sort of exteneded adolescence.
It's no wonder that a lot of women still find themselves without a man to father their children when they're in their mid-thirties. They just have not had good choices for "daddy" material.