An extended family member is going through this right now (mom's 1st cousin; 65 yrs old, never married; no kids).
He's been a drinker his entire life and it's finally caught up to him - he's had several mini-strokes over the past few years and he's reached the point where he's confused most days about where he is, who the relatives are, etc. Unfortunately, mom's brothers and sisters (my uncles and aunts) decided to take matters into their own hands and, after wrapping up his legal affairs here, they shipped him off to the country of his birth in Eastern Europe so that his own aging sister could deal with him. Problem however was that dear old sis is not so young anymore and is taking care of her own disabled husband. Plus, he has a stubborn streak and doesn't like being told what to do, told not to drink, etc. so he decides to come back to Canada. So, now he's back at the hospital since he has no place to go (aunts and uncles got rid of his apartment along with most of his things).
Very said situation. None of the extended family want to look after him because it's like looking after a small child. I think he should buy one of those apartments where it's an assisted-living facility with meals provided and a nurse and doctor on call. Problem is he's too cheap and he wants to live on his own (which won't work because he wonders off down the street and it's just a matter of time before he gets killed by a car). He's financially well off but is too cheap to pay for an assisted living facility AND he thinks everyone in the family is after his money.
Don't know how this will work out but I don't think it's going to have a happy ending at all.