My brother was the same way but he it expressed it in stronger terms. If I wanted to get him really worked up I'd ask him if he'd been to the mall lately. But honestly, I'm not really a big fan of shopping either.
I love shopping, We spent 5 hours yesterday in IKEA, didnt buy anything except batteries and candles but had a nice lunch and got some great ideas for the house were going to renovate, I even love going to the mall as this nearly always involves nice coffee, maybe lunch and maybe cinema