I lived at home until university, then lived in halls for a year, then decided it was a great idea to get a flat with my then-boyfriend instead of getting a student house. It was not. I only lasted 4 months before I moved back in with my parents because he was such a dick and I couldn't get any uni work done in that kind of environment.
So I lived back there for two years, then moved back with boyfriend (who had grown up by that point) after graduation .. then 2 years later ended up moving back in with my mum because we split up, then her and my dad separated and I ended up with her for a LONG time because I felt guilty leaving her on her own when she'd literally never lived alone in her entire life.
I eventually met my current partner in 2017 and moved in with him very quickly after meeting (I just 'knew' it was right, even though it was very soon, and 3 years down the line I stand by that 100%). I was 27 when I finally moved out.
I'm not one of those people who hated living at home by any means. I love my childhood home and get on well with my mum, so I was never desperate to move out particularly. It ended up like a housemate situation, and was never me living as a child and Mum doing everything - more like the opposite in fact, as she was very low after the separation.
I was saving up for my own place, but knew it would take a while, and I wasn't so desperate to leave that I'd think about moving out and renting - because that would take longer, and me and Mum would both be lonely!
4 months after I moved out, my younger brother graduated uni and moved back home and he's still there, so luckily for my mum she still hasn't had to be on her own very much!