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You seem to operate under the assumption that all Christian denominations are conservative, anti-science, culturally benighted, and proselytizing. That simply isn't the case. Some of the most intelligent, in-touch, politically active, culturally aware, liberal and faithful people I have ever met are Christians -- are motivated in very direct ways to do what they do based on their relationship with Christian scripture. They're members of the United Church of Christ, they're Quakers, they're Epsicopalians, they're Methodists and Unitarians and Church of the Brethren. Why give up on something you belive in -- something that has been of personal importance to your life -- just because you feel uncomfortable about the beliefs and practices some other people have used the same scriptures to justify? That's why there are hundreds of different denominations within Protestantism. If the emphasis on proselytizing makes you feel squicky, if you don't like the politics of the other members of the church, if they don't share your worldview and commitments, then you find a group that does. I have no doubt you could find a faith community that's more appropriate to who you are, if you take a few of them for a test drive. They're all just different rides to the same destination, so why not try trading up to a more comfy model before you abandon the entire enterprise?