I think that feeling is more common than you might think. Especially if you deviate enough from the societal norm (which Less Wrong generally does).
My general strategy for dealing with is social interaction with people who'll probably understand. Just talk it over with them. It's best if you do this with people you care about. It doesn't have to be in person, if you've got someone relevant on Skype, that works as well.
Hmm, this is probably good advice. Part of my problem is that my entire family is made up of people who are both 1) Passionate advocates of an American political tribe and 2) Not very sophisticated philosophically.