I haven’t had time to read all the replies, so if I am repeating what has already been said, I’m sorry.
My take on this is:-
You are his wife, no matter what. If part of that includes caring for him, well, isn’t that what any loving wife would do? In my case, it didn’t come to it, he died before I was needed, but I would have cared for my late husband for as long as I could,at home if I could.
The difference is:-
A carer does it because they are paid to.
A wife does it because she is his wife and she loves him.
There is a big difference. You are definitely and indubitably his wife!
Carry on doing what you feel is right for the both of you. Ignore well meaning friends. They aren’t going through what you are going through.
If, in the end, it is necessary to put him in a home, well, you have done everything in your power to avoid that, but sometimes you can only do so much.
Be guided by your instinct and how well you know your husband. 💐