It doesn't seem to me to be possible to hold both rationality and religion in one's head at the same time without compartmentalization, which is one of the things rationality seeks to destroy.

I can actually quite easily accept that it could be a good idea for rationalists to adopt some of the community-building practices of religious groups, but I also think that rationality is necessarily corrosive to religion.

If you've squared that circle, I'd be interested to hear how. Being somewhat religious for the social bit but having excised the supernaturalism is the only stable state I can think of.