I love my mum but she is very emotional and having to live with her would break me and it wouldn't be fair on my husband. To be honest I could say the same for my MIL she is lovely but very needy and would drive me crazy if I had to live with her.
I think it is nice if families can stay close to each other but to live with each other in the same home? I don't think it is healthy. I experienced going away to university for 6 years and ending back at home for a few months and it is amazing how quickly you slide into old, sometimes toxic patterns and roles being the black sheep of the family or the golden child or whatever. Its is much better to get out and to start learning to live independently and forging your adult life while retaining good relations with your family if possible. Just because it happens in other cultures or did here in the past doesn't mean it is optimal.
I have a cousin who is still at home in his late 30's and being tied to his mums apron strings has I think ruined any chance he has had at an independent life. I think sometimes it is quite toxic parental behaviour to keep your children so close, they should be encouraged to strike out on their own, otherwise their growth as a person will stagnate.
Obviously there is a housing and cost of living crisis but ideally we should fly the nest.