-when your in such denial about your RC spending that at anytime you can sell $1000 worth of racing gear, but one day later not even miss any of it, which makes you think-"OH JEEZ-how much stuff do I still have?"
-when you keep spare parts for a car you might buy again?
-when you buy almost every new car and spares just to try them.
-when you hope you win the lottery so you can build the ultimate RC/kart/hobbyshop first, then worry about the house, new cars, invetment later.....
-when major purchases for the home are tempered with "Now-do I need any cash for any upcoming races?"