> an objective examination of both world history and contemporary society produces a pretty favorable view towards religion in terms of net positive effects.
That is not mutually exclusive with the idea of organized religion being a tool of societal control. Sometimes that societal control happens to have good (or at least less bad) results.
> And as for the idea about societal control, the notion that it is a 'primary' reason for their existence is unfounded.
There's a reason why I'm specifying "organized" in "organized religion". The primary reason to organize a religion - rather than, say, allowing practitioners to autonomously determine for themselves their connection with the universe around them and how to interpret and reason about said connection - is precisely to constrain how practitioners reason about that connection. The very concepts of "blasphemy", "infidelity", "apostasy", "hereticism", etc. all strongly imply a desire for control. And given that the notion of a separation of church and state is pretty recent from a historical standpoint, it's pretty patently obvious where this leads for societies on local, regional, and national stages alike.
That is:
> People who seek and wield power will use whatever tool they can get their hands on; if religion plays a large role in a society, then obviously that is a tool that certain people will attempt to use.
Religion - particularly the organized variety - has historically played a large role in the overwhelmingly vast majority of societes. In the majority of those societies, said role was by government fiat. Consequently:
> Removing religion from the equation doesn't make the problem go away - those same people will just find different tools to use.
Right, but that doesn't change the reality that organized religion is such a tool, by design per its very nature of being organized.