It makes sense to waste resources on purpose (e.g. buying overpriced gemstones), at least from the evolutionary perspective - https://en.wikipedia.org/wiki/Hand

It makes sense to waste resources on purpose (e.g. buying overpriced gemstones), at least from the evolutionary perspective - https://en.wikipedia.org/wiki/Handicap_principle https://en.wikipedia.org/wiki/Handicap_principle. Yet, the world would be better if the same amount could be burnt on something with better externalities. If jewelry, then hand-made one.