You might be a hardcore reefer if:
You change the living room decor to go with your tank.
Your power bill is too high due to all the tank equipment so you buy a high efficiency washing machine.
then . . .
You spend over 3k on LED lights because it will "save" money.
You find a good deal on coral/live rock, then after work you go over to someone's house whom you have never met before, spend way too much time talking "reef" with them, get home late with your treasures and stay up half the night re-aquascaping to fit in your new treasures.
Your reef tank sends you an e-mail that something is wrong.