Absolutely. You do realise that the the 8,200 people who are regarded as homeless in this country are not sleeping in doorways, right?
Moving out of a family home and living with your friend/relative/parent does not mean that you have a home. It's certainly not what anyone aspired to.
Yes, I know it's not necessarily so, that's why I said "Given his means there's a strong likelihood that it will still be his pension too after a divorce/ Judicial Separation."