Actually, the richer people are, the more I judge. If you're poor, stretched thin, buy your clothes and food at Wal-Mart because that's what's accessible to you? Understood. If you're rich and you still buy products that rely on borderline (or not borderline) slave labor, dubious environmental practices, etc.? You're a douchenozzle. I'm not going to be calling for you to be punished for being a douchenozzle, and I may even like you in different contexts, but I will definitely judge you.
(Of course I judge myself fairly often, too...)
Following this line of thinking, things like non-ethical diamonds and edible gold pretty much always qualify for contempt, in addition to harmful consumption. Contrary to the OP, however, I would not put super-expensive meals in that category--they rely on so much work, from the growers and farmers to the cooks and waiters, not to mention that a great chef is a great artist as far as I'm concerned...