Decades ago, an old friend told me "I became a coffee expert, I learned everything there is to learn about beans, the ways to prepare them, the chemistry that goes into it, and now I can only enjoy a cup of coffee prepared by the most expensive machines from the most expensive beans. The shit part is that I enjoy it just as much as I enjoyed my shitty supermarket coffee back when I didn't know anything about coffee."…
Another aspect of this which doesn't depend on price, is when I get attached to some regional variety, and then I move. That's always a bit painful.
Or sometimes they just stop making it. Or they change the formulation!
Attachment is the root of suffering...