I tried the 'I'm not particularly religious' tack when questioned about my religious stance by people whose business it wasn't. However, I live in South Carolina and they rarely settled for that answer, they almost always wanted to know particulars. So for years when asked what church I go to I said I don't go to church, I'm an atheist. Then I got involved with a Untiarian Universalist fellowship, so now I say I go to that sometimes. The conversation is much less likely to turn personal and more likely to turn to 'what's a Unitarian Universalist'?
I'm not anti-Christian. I'm anti-stupid.