I think this is the most.. humane approach. For everyone involved. From what I've read about the nightmares of old folks' homes, that way of handling elder care has been failing us for a long time (and only recently has come into view).
Multi-generational households really seem like the way to go. Everyone gets to play an age-appropriate role and (in an "ideal" family) everyone is taken care of.
Multi-generational households are a non-starter when you are a child of divorced parents.
My dad and step mother, mom and step father, and my mother in law, step father in law, father in law and step mother in law are not going to be living in a shared household ever. And if that somehow happened, I wouldn't want to be anywhere near it. :)
Multi-generational households really seem like the way to go. Everyone gets to play an age-appropriate role and (in an "ideal" family) everyone is taken care of.