Sorry, but if you actually have to say something so patently obvious, then you and I are discussing things on mildly different levels of complexity.
Sorry for what?
What a foolish response. You had a moan about people "fixating" on the word children, so no it wasn't so patently obvious to you at all.
Anyway my question still stands... would you not charge a late mid/late twenties year old rent even if they were earning a proper salary but hadn't moved out yet?
No I wouldn't.