I'm in the same boat as you, Indiana. I'll be wishing for a meteor to hit the house on Thanksgiving and Christmas. :evil:
My extended family is a bunch of uneducated turds when it comes to history, philosophy, economics, religion, literature, and politics. Hell, my grandmother who seems to support complete tyrannical rule can't go 5 minutes without pestering me with a relentless spirit about hot button issues that she surely does not understand. I have to sit quietly at every single last family gathering just staring at the table because the moment I open my mouth the imbecile circus gangs up on me.
I was recently given a flask that my best friend had laser inscribed for me with the phrase "For Holidays & Sanity" so I'll do a toast for you and me and anybody else dealing with uncomfortable or just plain sad family holidays. You aren't alone!