I’m smack in the middle of the boomer generation at 65, never married, was self-employed most of my career, and have no kids. Until recently I took care of my mother as she sank deeper into dementia, so in that regard, what you’re describing is nothing new. I have the (occasional) concern about what very possibly will be my decline, though by that point I hope (here in Canada) that the assisted dying legislation we currently have will be revised to allow me to decide when to pull the plug with fewer “checks and balances” than we have now. This will very possibly be the same thing your kids face as, at some point your marbles roll out of the dish.
I wonder how many of them will write the same kind of article as yours then.