21 when I moved out involuntarily, courtesy of the USN (never again).
I got out when I was 25, and returned to live with my parents.
Lived with the ‘rents until I was 27.
By then, I had saved enough coin to make a down payment on the house, where I still live.
I might have paid some room & board, but perhaps my dad spared me that expense.
If he did, it was probably to expedite my accruing enough pesos to move out with a financially secure foundation, and thereby never return.
Consequently, I’ve never had a landlord nor paid rent.