I see the same thing among my acquanitances/friends. Personally, I think Baby Boomers need to toughen up when it comes to parenting their (adult!) children.
You can’t stop loving your kids and wanting them safe and sound. Libby moved back in with us for a year and a half, although she is adult and had a pretty good job. The expensive DC area and a long commute just wore her down. She paid $500/month rent for a bedroom, bath and sitting room in our basement. She just moved herself to Savannah with a better job, in a you-haul truck trailing her car. I returned all her rent money as a surprise gift to start her saving/investment practices. No harm, no foul.
TC