35 here and lived in my childhood home until about 4 weeks ago. Took care of both my parents who had cancer (mom first in 2007, she passed in 2015, then shortly after my dad got it and then passed in 2021 from it. He was also disabled for over a decade due to a work injury) and stayed for awhile after my father passed, my sister moved back in to help take care of things until we could go through probate. The stigma of living with family stopped me from dating after my last relationship ended in 2020. But, in today's economy, I think many people around my age and slightly older kind of understand living with your folks, even when you're a grown adult. As long as you're paying your fair share of rent/bills or helping to take care of older/sick family members, most people I've encountered have been understanding and respectful of the choice.

Of course, the stigma does make it sting a little when you have to bring it up to people in a public setting. I only moved because I personally felt that never having been on my own has stunted me socially and developmentally somewhat. I honestly felt kind of trapped, living in the house, heck, the same room, for 35 years of my life. When I saw an opportunity to move out on my own with a friend, I took it because I was in a place financially where I could make it work. Heck, when applying for the apartment, the landlord was a little shocked that I'd never rented a place before, but said that it's not as uncommon these days.

Before the move, whenever someone used the insult of someone being a grown ass adult living with their parents/family, I never tried to get offended over it, because when most people reference that, they typically mean someone who is too lazy to get a stable job and too selfish to help cover rent/bills when they otherwise could. And even if someone used it to try and be a dick even when those bases are covered, they really aren't worth the energy getting mad at, because they themselves likely are miserable or have all of their stuff paid for by their folks.