Whats the benefit of being an atheist anyways? Why not live in ignorance thinking there is an afterlife, if you are right, we only get one shot, and not everyone can take that. So let them think there is an afterlife. Sheesh. They aren't hurting you. If someone says there is a god, why correct them? Why not keep your opinions to yourself, them saying there is a god, doesn't hurt you, there being a christian president, and not an atheist one, doesn't hurt you. How does it in anyway affect you actually? He wouldnt make any other new laws, besides those restricting other peoples beliefs, any other law would only reflect his political party. People pray around you so what? They don't force you to join in.
And if someone asked if you were christian, you could just respectfully tell them you didn't believe in that, instead of trying to shove facts in their face. And I guarantee they wouldn't be prejudice to you, as long as you were respectful, but I'm sure respectful means to you bleeding out scientific facts about why you are right, instead of just finding a way of stopping at I don't believe that.
I can also guarantee that personally, I am surrounded by way more seriously devout Christians, (that are crazier than the ones sourrounding you), than you are on a day to day basis, and its not as bad as you make it out to be.