My MIL isn't anywhere near that financial position. And my MIL and my FIL (the 2 are divorced) have both already left my wife as their estate executor. Because my wife is responsible. Her sister is the leech. But by the time they pass, there's going to be little left over. But personally, I don't care. I want them two to enjoy their retirement. Get out and do things. My old man, even if his health were good, he gets 5 miles from home and warning buzzers go off in his head and he must get home. He never wants to do anything (but gripe).Dang, a friends MIL just did this last year. Sold the 38 acre dairy farm ($2.3 M) and paid cash for a Sprinter chassis Winnebago Class C, a time share in a North America RV club and a prepaid fuel card. She orders all food from Amazon Fresh or such. Carries no cash. Has guns too.
She fought with the 7 children that wanted nothing to do with the farm but then needed to stick their noses into what she wanted to spend the money on. She had the lawyers cut checks for $10,000 each and removed them from her will. The bulk of her money is in trust for the 15 grandchildren.