I agree; as a native American English speaker, I simply prefer the NA servers, both for the people and the language.
I can already guess what the EU servers are going to be like; the only English speakers will be from Britain, and from my time on XBL I know that many online multiplayer Brits are, eh, vocal and brash, to say the least.
And don't get me started on the amount of spammed French/Italian/Czech/Polish/whatever that will be all over the EU servers.
You do realise that most people in EU learn English as a secondary language? Sure, many don't know proper spelling and grammar, but that doesn't mean they can't make themselves understood.
OT: I can't wait for the patch, the lag spikes are killing me (literally), especially in the evening when there's 10K+ players.