Open mind but no hours needed.
First “Religion” doesn’t have a goal. Religion is used to accomplish goals. Religion is needed by society for several reasons:
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Religion provides a common set of moral postulates on which to base behavioral expectations. That is, it provides the moral justification for the rules and laws.
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Religion provides a folk science, a set of explanations for why things are the way they are, a stab at thus predicting future events and possibly exerting some control over them.
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Religion provides a common bond for members of a group, cementing a kinship relationship be it real or fictive.
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Religion provides a sense of surety in the face of a very unsure world. Doubt is uncomfortable; faith succors.
Now different faiths at different times have one or the other goal more in the forefront. But those are the biggees.
Of course those rules can include a willingness to self-sacrifice to any degree or to kill others in particular circumstances if it serves the needs of a society. Of course that folk science may include a belief in a god that will be pleased with human sacrifice. Of course a percieved kinship motivates a willingness to risk ones own life for your brothers, maybe even by suicide bombing, or by throwing oneself on top of a grenade. Of course surety can be falsely placed.
Or not. On each count.
Are we taught these beliefs? Of course. Indocrinated? Maybe. Brainwashed? Not as defined by Unca Cece. To claim so is just wrong and stupid.