Growing up, the two churches where families of more than two children were common were the LCMS and the Catholics.
As an adult, I have often wondered why the LCMS was that way.
The author is right. Once sex becomes just about fun, marriage doesn’t seem that strong of a bond.
So then, when a woman is pregnant, then sex should stop too, because then it's only for fun. That would weaken the marriage bond then.
And of course, once a woman is past her fertile time in her cycle, then there should be no sex, because since she can't get pregnant, then the sex is just for fun.
And when a woman is past menopause, then there's no chance for conception at all and sex becomes only for the fun. Who ever would have thought that that would weaken the marriage bond (besides a Catholic I suppose). In that case, they'd better stop having sex, right, since if they continue just for the fun of it, it'll weaken the marriage bond.
Imagine that. Married couples having sex just for fun. Oh, the HORROR....