> why should everybody have to show the same level of care for everything they do/consume as aficionados

Nobody has to do this in any city I have been to. Even in the most hipstery independent coffee shops, you can still ask for a black/white coffee and they will make you one. And if you simply can't stomach the independent coffee shop there is most likely a Starbucks or Pret next door.

Granted I have not been to Iran, and am loathe to make assumptions about countries I have not experienced, but I simply do not believe that OP cannot find a "basic" coffee in his city.