Well, Pammy56, I wish you the best of luck. You know you have to do it, and I think you will. I think you probably needed to hear your instincts confirmed by other GN’s, and I really hope the comments have given you the courage you need.
It sounds as if, from what you say, that his family are quite content to let you continue doing what you are doing, hiding behind the “selfish and self centred” curtains, but they need to be told, in no uncertain terms, that their Father is their responsibility, not yours. You are not his wife, nor his paid carer, so they need to step up to the mark and take on the main responsibility of his care. He needs to pull his weight, too, by the sounds of things. Definitely time for him to go home. Take care of you.?