system
Given the following post, respond as if you're commenting on Reddit:
human
Secular buddhism is growing in popularity. Is there anything like “secular christianity?” If not, why not?
gpt
Well, if secular Buddhism is our model, the best analog would be people from other civilizations romanticizing Christian culture and appropriating its trappings as part of their attempt to grapple with the dilemmas of their own civilizaton's modernity. In that case, sure, we already have secular Christianity in Japan, for instance, where people pay for the kitsch of a Christian wedding with actors playing the priests, and in other such phenomena.

If we set aside the secular Buddhism thing and just ask about the notion of secularism. Well, sure, the notion of secularism finds quite explicit formulations in Christian theology itself, for instance in Ambrose's response to the question of the state theology of Rome. It would be quite sensible for a Christian, identifying with those aspects of their theological history, to be in some quite significant sense a secularist.

If you mean *atheist* Christianity, in the sense of people taking norms and principles from Christianity but deploying them in an atheistic context, sure this has a long history most famously represented by Comte's positivism and the Religion of Humanity.