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.
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.
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.