Central Europe is losing the vibrant cafe culture it used to have, where people could sit together for hours and chat. Cafes today often blast loud pop music and send staff around more frequently to pester clients who seem to have finished their drinks, as owners believe this will prevent people from loitering. Instead, customers will quickly drink what they ordered and then get out, freeing the table for other customers.
Perhaps in the USA the situation is different, but I live in a city with a tradition of quiet, intellectual cafes that goes back centuries, and was still like that a decade ago, but now I am hard pressed to find a single place that would be pleasant to socialize even with my friends in, let alone mingle with other regulars and strike up conversations with strangers.