You mean that dementia is grounds for annullment? Dementia that existed before the supposed marriage, yes. But not if the person was of sound mind when he made his vow. That can’t be undone just because one spouse suffers from mental illness or some other grave ailment.
I don’t know where you are getting your claims about Catholic doctrine. Your idea that function makes one a wife is absurd from a Catholic viewpoint. What makes a woman a wife is her free, uncoerced, knowing vow with a man who makes the same vow. If she ceases to be able to do X or Y she, the person, who made the vow, does not cease to be a person and the marriage remains.
And in your first posting you wrote, “a man is not a monk.”
Sheesh. Your implicationis that men can’t live without sex so if a wife can’t give it, she’s no longer a wife, so find a new woman while taking care of your old woman.
Monks are men who show that men can live without sex. So too are all the faithful men throughout time who honored their vows even though it meant living without sex.
You demean men when you imply that a man has to have a woman for pelvic gratification.
Talk about “modern American culture” lenses.
I am not arguing with you. The marriage contract can be impeded by Ecclesiastical or natural law. The condition of Alzheimers is a natural occurance, one of natural law, which naturally can impede a contract. Right? Annulments and dissolution of the marriage contract do occur all the time for these natural reasons that are quite apart from human fault to which Christ addresses his warning against human fault. Right?