Also do you really want to limit your gameplay experience just because you don't like everybody on different servers?

For example in XI sure there's some hilariously offensive /shouting going on at all times but the high population keeps the economy healthy and the AH can always offer the things I want to buy from there. Also if the transferring was made free then those who enjoy to play a MMO all by themselves could easily take trips to dead servers when they want some "me"-time.

Just walking in a city while doing nothing is a lot more enjoyable also visually when you see other players running by doing their thing.

Also if you really don't like some players you can alway blacklist them.