I agree it is for the use of everyone.
Two points though.
1. If you have a trunk full of paying passengers, how do you think they would feel if they were told they're playing dodgems with a load of mil aircraft.
2. Fly where the hell you like, just don't bitch and whine when your fancy TCAS wonder device keeps warning you of other aircraft (who, by the way, probably knew you were there before you did!)
It's called common sense or airmanship or something.
BV
