What? I never made that argument. You're putting words in my mouth and calling me asinine. Please actually respond to what I wrote.
> Are the bible, history of the church, the nature of reality, and developing a community not shared interests?
Nature of reality is more than an interest in my view. If you can't agree on reality, then no amount of shared interests can cover that gap.
As for the bible, history of the church, and community development... I guess those could be shared interests. But if you've ever met many Catholics, few are interested in the bible, even fewer in church history. We do like drinking and eating together though, so we got that! But other than super uppity social clubs, I've never really seen a dinner group achieve the success of the church, so i'm forced to conclude the religious aspect has something to do with it.