It is not the reason we had children, for us to become our Carers. Most people with families are already over-stretched with time, trying to work and look after their families.
Your husband needs to be told, plainly, that as he cannot cope with many things himself, he needs to have professional caring assistance for that assistance.
I do not understand anybody who would wish to have a child (of any age) to wipe their bottoms, change their clothes, clear up their messes. Interestingly, that if someone was put on a ward, etc where there is a family member working, then that family member would have to move off that ward.
When my husband became very disabled with MS our children were not yet adults and I worked so hard to prevent them having to take on any Caring responsibility. How could they have any sort of relationship with someone if they were having to pick him up off the bathroom floor with his pants around his ankles.
His bitterness at his illness and his demands caused a serious illness in me, which he totally ignored and brought about the death of our relationship.
On our 25th wedding anniversary he actually left and took himself to the local respite hospital. I applied for a divorce. Social Services had several fits as they did not have any suitable housing to be able to put him in and had alegal obligation so to do. So, they leaned heavily on me to have back home, promising me so much in the way of adaptations and support. I was ill, exhausted, worried and alone - I gave in and thereby giving several more years of horrible problems.
When he did finally leave, he did so with the house in a dreadful state of repair and no money - informing me that I should take in a lodger to help to pay the way for myself and the children.
I survived (amazingly), but look back on those years with total horror. The children, now all quite mature adults have no real relationship with him. Visit once of twice a year out of a sense of duty.
Please make it up with your son. He must have been totally shocked at the suggestion, no wonder he shouted. His first duty is towards his own family. Sure he is just as sorrow at his loss of temper, but at least he gave you honest replies. Contact him and re-forge this important relationship.
Surprised Social Worker even stated that. Need professional caring package both for your husband's and you sake.