Honestly, in my opinion, I find them selfish, if only because you’ve admitted that you “forced” your husband to get sterilized simply because of what you “want”. I don’t mean for that be attacking, it’s only my opinion and only of your reasons, not of you.
I don’t think you’re thread is absurd, though perhaps a unusual, but any way to get at learning the truth is important, as I’ve said before, it took me nearly 8 years, after conversion and 6 years of marriage before I really began understanding this teaching. And I wouldn’t necessarily call you selfish, I don’t know you, you could be extremely generous and charitable with nearly everything else.
I understand the hesitation behind wanting to actively trying to pursue more children, but to say “never, ever, ever”, when, I’m guessing, you’re probably younger than I am and I know I have many more years of fertility down the road, seems short-sighted. What happens if, 5 years from now, God places a desire in your heart to have another child? It’s not always about what we want, but it should always be about what God wants for us.
I hope that makes sense, and it does not come off being mean.