Imagine that you're in jail for some reason - solitary confinement, small cell, just an iron bedstead to lie on, no mattress. The main item in your daily diet is espresso coffee. Not just some, but lots. And lots. 125 shots a day, in fact. And you're forced to drink it.
Kopi luwak, a.k.a. 'wolf coffee', 'cat coffee' or 'crap coffee' reveals our selfish vanity, that so many are prepared to pay so much for 'crap' merely to make a 'statement'. The monied are now driven to acquire ever more extreme purchases, in order to possess something that nobody else does.