"conservatives" want to limit the power of the marriage contract. And yet they also accuse the liberals of attacking marriage!
Some husbands, and Michael was an estranged husband with a mistress, have serious conflicts of interest and should not be appointed guardians.
My wife goes into a PVS and for a few years we see what we can do. We give up but now I can't legally pull the tube (even though she told me she wanted me to) because her family and a bunch of "conservatives" decide otherwise. This goes on for a long time. Five years after the accident and maybe two years after when I would have originally pulled the plug I start a new family. 10 years after accident people say that I'm not even her husband anymore and should give up my spousal rights to her family.
If you start a new family, you are no longer a husband to your disabled wife.
We'll leave alone the fact that this situation would mean you are living in sin with a concubine and possibly having illegitimate children.