In our society system now before couples come together their do go for test for genotypes and so on  and most times these test comes out negatively affecting them were by the man might be AS and the woman AS too and the result will aromatically disrupt the marriage

But back then our fore father's don't have time to check all this things and there were happily married and giving birth to numerous healthy children is it that things have changed since then or what's wrong your opinions is recommended