Get over it.
Christian culture has very little influence in our broad pluralistic capitalist society. (The media? Corporations? politics? Academia? business- how many of these are dominated by "Christians"?)
I'm a Christian. I find great value in my faith, and I would hope that you would too. I don't think that I am better than you. I don't want my faith to be legislated, nor do I want it to be the official religion. It is my faith. Not the governments. I don't excommunicate anyone. I can't force you to believe what I do, and rarely do I ever try. Most Christians I know are pretty honest about their faith, will share when asked, but are not over the top heavy handed. Most of us take the biblical admonition to let our lives do the talking rather serious. Francis Asisi said it best: "Preach the Gospel always. If necessary, use words."
Christianity in the US is really diverse, and contains a broad spectrum of believers from many different political, ethnic,social and economic backgrounds. We don't all dress alike, nor do we vote alike or act alike.