I myself don't anymore, I really don't like most of the Europeans as some of the European countries seem to be always bad at playing mmo's.
You also have the issue of a lot of people not being able to speak English at all. I'ts not so bad with WoW but it is with the games i play.
Being asked "Spanol or GR??? isn't so nice either
Do you have any reasons why you play on EU servers as someone that lives in the US or vice versa and if so why or well why not?