They're planning for the future! By the time the kid retires as the GOAT Part Deuce, they might have it paid off. Of course, then they'll have to start working on the fourth mortgage they took out again the house that is worth half what it was when they started MX, but anyway....
Thing is, if we had the jack to do it, we'd all do it. Although somewhat ridiculous to see a little 50 come out the back of one of those, it's all relative to an extent. I'm thinking quite a few MX'ers put a couple bills towards MX before they do fifty cent towards the home, the car, etc. Go on, admit it!!