I think like there's a massive difference between having been independent for years and then moving back with your parents for economic reasons, and never moving out from your childhood home.

The best part of moving out for me was becoming an independent adult - making decisions for how I wanted to live, cooking my own food, buying my own art/furniture etc. Inviting (girl)friends over without worrying about anything. In short, being the master of my own place and life.

I feel like gaining that independence is massively more difficult for people who continue living with their parents into adulthood.