@ossobuco,
I visited a cousin and her husband back in California about five years ago. We're the family survivors of a certain irish warfare mode that permeated our childhoods and then, years later, our own adulthoods (her sister vs. us); both of us don't want to go there with arguing. Actually, they're not irish as she was adopted (big improvement by her with brain genes, I must say).
She and I differ in two ways: she is still catholic, and conservative. I said I'm not religious (she already knew that) and that I'm liberal left with traces of conservative/libertarian. She said she was conservative, with a zone of liberal, which I know is true, she was in on the freedom riding thing years ago. We talked freely for that week, understanding who we were, no stress.
So, there's a phrase: I'm not religious.