Waste mod points all you want but name ONE TIME, just one, in human history where the entire planet was sent backwards by anything OTHER than religion. Religion is the ONLY thing that can give a man the God like powers to ultimately destroy pretty much everything, be it the math revolution in the Arab world or the centuries of knowledge built up by the Romans, religion is the ONLY way to gain enough power over enough people to completely wipe everything out like that until the invention of the atomic bomb.
Now if you want to argue its not the fault of the religion itself, but the assholes in charge of it? Fine but I would argue that you are splitting hairs as throughout history religion ALWAYS gets taken over by the assholes, from the Catholics burning anything and anyone they didn't agree with to the mullahs having anything that didn't say Allah destroyed it always ends up in the hands of major douchebags, but unlike politics this is not something one can have an opposition for easily because "You are against God you heathen" and so on and so forth.
There is a good reason why religion has been called "the opiate of the masses" you know, its because it allows a handful to have control over large populations in such a way that only drug addiction comes close.