Should being childfree be seen as an equal life choice to having children? Absolutely.
Should we start haranguing women the moment they get married / hit 30 about their reproductive choices?
Absolutely not.
But to what end are we curing women of their desire to have children as you suggest? Why is that ok but curing you of your aversion to not having them not?
I have three, I have friends with more or less or none. None of us need out minds changing. None of us are wrong.
If you want to cut worldwide population then the West probably isn't where you want to start.
Better education, life choices and contraception is what women need. Not to be told they shouldn't want children cos children, bleurgh!