I am not promoting anything. All I'm saying is that in any group of 500 Catholic families whom you suspect are practicing birth control because they don't have enough children, some may be infertile, because aren't 10% of couples infertile for some reason or other?
45% may have sinned once, by having vasectomies, and regretted and confessed that sin.
Another 5% may be practicing NFP.
So that's 60% right there. And maybe the other 40% are using the pill--I don't know.
I don't look at people who only have two children and speculate about whether they are practicing birth control or not, because it's between them, God, and their confessor.