Or anything at all - see also beer, burgers, clothes, bikes etc etc. The more exposed you are to the nice stuff, the more the regular stuff seems crap.
My main issue with coffee is the insane wastage produced by disposable cups, bought by the middle classes who talk like they are eco warriors but it’s actually nothing more than boring bragging round the dinner table.
Or anything at all - see also beer, burgers, clothes, bikes etc etc. The more exposed you are to the nice stuff, the more the regular stuff seems crap.