Indulgence is what is, indulgence. To me it's generally not a big deal, sure they are better things you can be doing, but if you're generally a smart , help others, try help society and community, or get your professional work done, what's a bit indulgence to me? It becomes a problem when it's clear the person's indulgences interferences with his life or yes, there are rich and stupid people out there, but buying a few luxuries don't send straight there. A luxury headphone, sure $2000 of the money you spend could probably be put to better use, but on the other hand it doesn't produce crazy emissions as you use it, it doesn't have side-effects on others, it's doesn't mess up your mind like drugs.