Look at it this way: there must be a very good reason why your husband is in care, so if you "bring him home" have you the physical and mental strength to care for him?
This for both your sakes should be your first consideration.
Secondly, I doubt you will feel less alone with him in the house, as caring for him might well mean, as it did for me, that my entire day and night had to revolve around a terminally ill husband's needs.
Most mornings I was so tired, that I could gladly have crawled back into my bed, instead of making it. But as I had to help my husband to and from the bathroom (later, wash him in bed, and empty his urinal at need), shop for food, do the washing, make meals, talk to my husband about the entire situation and to his doctors, there certainly was not time for a social life, unless friends dropped in for coffee and a chat.
And our marriage had had its ups and downs, like all have, but it was basically a good one, which gave me the strength to soldier on.
You have clearly said that your marriage has been harder, so do you really feel you can cope with your husband's care?
If he stays where he is, then you should be able to arrange your week, so you could join some activity that appeals to you, and at least meet some new acquaintances. This should make you feel less lonely.
If you want a relationship to a man in the usual sense of the word, you will have to reconcile it with your conscience to have a "friend with benefits" .
There are a number of divorced men and widowers out there, so it should be possible to find a lover if you want one.
