Making friends in your new town or city can be an amazing way to get involved in the local culture, but there's something to be said for having a friend who understands when you just need to complain about why nobody in this country seems capable of forming a functional line, or keeps up with the latest celebrity gossip as much as you do.
You shouldn't restrict your entire social life to other foreigners, but having a few friends who come from a similar background and have similar viewpoints can make you feel less alone, especially at first.