When you can't help but check the rpm, volts, and AMP ratings on every single motor that you see.
When you take a zillion pennies to the bank to get the cash for just one more battery.
When you put a Watthour meter in each kid's room and make them pay a fixed rate.
When wife gives you a final ultimatum between choosing either Her and her love, or your Re-system,,, and you choose RE!!!
(I'm not married, but I can imagine this would happen to me if i were!)