I would counter that reasoning doesn't stand by itself. Reasoning is a method of getting from A to B, but you need an A (your axioms) to reason from. It's easy to disparage people whose axioms are different from yours (Jehovah is God/Allah is God/There is no god), but sometimes that's all there is to it. Though once emotions get involved (such as by challenging the political/religious framework on which they've built their life), pretty much everyone will also fail to adhere to strict reason.