Hi... My father is 78 years old. End stage COPD. He lives alone and honestly I feel he needs 24/7 care. Caveat: There is no one willing to move in with him or have him live with them because he is abusive. If I feel it is dangerous for him to live alone can I put him in a home even if he doesn't want to go ? State of Florida.
That is what I would do, perhaps I am not as forgiving as others, but I read a bumper sticker that read "mean people suck". Do not feel guilty, but do allow him his decisions.
You could petition the court for guardianship and if you are given it, then you could legally decide where he lives. (You can search this site for a lot of information about guardianship.)
You could report to Adult Protective Services that you feel he is a danger to himself and tell them why. They would investigate.