"Travel is a bit like a drug. Once you start, it can be difficult to stop, and the more you do it, the more you want to keep doing it. Go without it for long enough, and you may just find yourself in a pawn shop with your significant other's fancy watch and a fistful of Great Aunt Gertrude's silver in an effort to plan your next escape."
"You know you're addicted to travel when ___."