My children may not give a rat's ass about me when I am old ... but I will love them! That is why I decided to raise children. No better use of my life, imho.
Good for you! I think those couples that wish to have children should have as many as they can care for. I think those that don't want children should be just as free not to have them.
I think people who resent or are angered over either decision have some deep seated issues that they need to resolve.