For those looking for never ending talks and debates about what is true or not, we still have philosophy, religion, and of course politics. Moreover, there's a lot of room the "The Fine Art of Bullshit" there.
Those are divisive topics, those are debates that matter.
For increased social cohesion play-fighting over bullshit is better, there's a subtext that the only reason it's worth it is you actually enjoy the company of those around you.
