I actually appreciate you posting this.
I know it might sound strange to people, but my parents really don't control anything for me, we were just really close and they knew how hard it was for them at my age and wanted to make sure I was making the smart choice, not just moving out because I wanted to live with my fiance. It was never a 'I don't want you to/you can't move out' it was more of an 'as long as you can still afford to pay your school loans and everything else, you can do what you want'. Maybe I worded it wrong, but it was never discouraged, there just wasn't ever a push of 'omg you're 24 you need to move out like yesterday'. And of course I ran numbers with them, yeah I know how to do the math, but it was more of a 'you've never lived on your own before, make sure you're not forgetting to factor in so and so bills' or 'this is how much you would probably spend on your electric bill' things like that. And I actually had bought my own first car in high school, but it was a beater that broke down and we sold it. So since they had an extra car that was just sitting around, my brother and I were allowed to share it on breaks and for work, and then we each got to take it for our senior years in college. Since he was still away after I graduated, I got to drive it instead of it just sitting around in our driveway.
I don't know if this even explains it better, but oh well. Personally, I know my parents have never tried to hold me back or control anything. I've always been able to make my own decision, but I am not afraid to ask them for their opinions considering they have more experience than I do!