Why? This is just a statement of your priorities that you are projecting onto someone else, and then judging them for it. Not everyone has your set of priorities. When I was in gradschool I bought a $1000 dollar fridge. That was probably ~10% of my take-home, because I believe you get what you pay for. Am I "unreasonable"? Maybe according to you, but I'm fine with my decision.

If you're going to expend effort judging someone, judge them by their deeds, not by the appliances they buy.