Why atheism is important, and why religion is dangerous

[causal code]

Maybe in another world, where some required flavour of rational thinking was hypothetically needed to oppose some other large (but non-religious) foolishness... atheism would not be relevant in that world.

I'm struggling mightily with this. Why not whip out the razor and just concentrate on this world, the only one we know exists.

However that hypothetical world is not our <snipped duplicate of  irrelevant wiki page> and this is why atheism is important.

No. Critical thinking is important, learn the difference.

Let me rewrite the prior steps in a better way.
I am of course concentrating on this world, and thus my previous last sentence "However that hypothetical world is not our world...". (The nice little benefits of English words)

(1) Atheism is relevant in our world, especially because there is a high degree of religious nonsense in our world.

(2) Atheism is not irrelevant as you state, especially because of (1). 

A way atheism could be irrelevant, is in some parallel universe/earth, where religion was not a huge pain in the arse. 

(3) Critical thinking alone would probably apply in the parallel universe/earth above, where the parallel universe does not have the huge butt pain that is religion.


How how can critical thinking alone be important, i.e. how can atheism be irrelevant, when we see specifically, that theists do critical thinking (i.e. science) all the time, except when it comes to fictitious sky characters????

It means that a particular flavor of critical thinking, i.e. atheism is probably quite relevant indeed.