It's not only teenagers! 18 months ago my daughter moved home after more than a decade of independent living, after getting a new job in my region. I agreed to this to enable her to save for her own home, which we anticipated taking less than a year to achieve. Then came the cost of living crisis, with rising mortgage rates etc, so buying had to be postponed. Since then she has been made redundant, so we are thankful she hadn't taken the plunge to get a mortgage. She now has a new job offer and will be emigrating!
She has taken over 3 rooms of my house and most of my garage but now needs to start getting rid of much of her belongings before moving abroad as I will not be storing boxes of old belongings which are not worth her shipping with her,
I'm wanting to move myself, to downsize to a cheaper part of the country, so I also need to declutter.
I can't blame her for all the mess as I'm not the tidiest person myself, but other people's mess is so much more difficult to live with than one's own! I lived alone after her younger sibling went to university, so getting my own space back will be nice. I will miss her immensely but only having to deal with my own mess will be a great relief.