keepingquiet
You have two choices- leave him regardless of the money situation- you will never be as well off as you are now.
Or, stay and build a life for yourself around what things in life make you happy. There are ways of living with controlling people but it takes determination and emotional strength. At least it sounds as if you will be financially secure.
No harm in asking a solicitor's advice. No harm in going for help dealing with his abuse.
It is only your choice
This is what I was going to say.
It won't necessarily be easy, but if he is detached from you anyway, there is little to lose if you build a life without him in it, and keep your interest in the house. Starting again in a new home with little money will be difficult at 71, and why should you have to do that? Let him crack on with his sulks, whilst you go out and do things on your own. If he goes first you will have new friends to support you, and if he doesn't - well, at least you'll have enjoyed your final decades. Buy yourself a heated blanket for the sofa and another for your side of the bed, so at least you are warm. Lakeland have some lovely ones, and if you join their club you get 30% off vouchers a couple of times a year, which will reduce the price a lot.
You could join the U3A, volunteer for whatever floats your boat, set up a book group or lunch club if there are no local ones already - whatever you enjoy doing. Try to be out as much of the day as possible, so his sulks fall on stony ground - you never know, he might miss you and start acting like an adult
. If not, well, at least you won't be looking at the piles of 'stuff', and spending time in a house you don't like with a man who is difficult.
I'm sorry you're going through this - in later life we should be happy in the nests we've built over time - but I suspect that leaving will not do you any financial favours at this time of your life. 