As someone being 'forced' to use Mongo for the first time, I'm curious as to when/where you hit that? I'm looking for pros/cons, but the internet is proving ra

As someone being 'forced' to use Mongo for the first time, I'm curious as to when/where you hit that? I'm looking for pros/cons, but the internet is proving rather unhelpful as it seems to be people vehemently for it or against it.