@Qingu I think at 5 years old, no one has authority that supersedes your parents. Sure, there are other authorities: teachers, babysitters, older siblings and other relatives, and yes, religious authorities too—but when you are that young, who punishes you? Your parents. Who makes every single final decision in your life, about treats, punishments, norms, everything? Who loves you and has loved you for as long as you remember? Your parents.
And it’s the parents’ job to mediate the outside world for their children. If a parent can’t do that, forget not sending them to church: you can’t send the poor things out the door, because immediately when you do they are exposed to, let’s be frank, terrible realities about the world! Disgusting, perverse, destructive things. The media, other children, people in general, institutions, all of it! A parent can’t rely on other resources being good for their children: they have to teach their children how to approach the world. If they can do that for anything, they can do it for religion.
It doesn’t matter what carrots the priest holds before them, or if the ideas taught are rational or not, or how authoritatively they’re expressed: none of that is relevant because it’s no different from anything else. It comes down to the parents talking to their kids—and not just to talking to, but asking, conversing, to see their kids’ responses to the world and to gently nudge those responses into the correct position.
There are two ways to learn about a thing: immersion, and secondary-source study. There are benefits and drawbacks to both. Some people prefer one, some the other. It’s okay that we disagree, but I think you are making two errors:
(1) over-representing the power of organized religion (I’m not saying there isn’t power there and that there haven’t been systemic abuses of power since the dawn of time, but I am saying there is personal responsibility involved, personal agency, that you’re not taking into account); and
(2) under-representing the authoritative and influential forces of the rest of society. Religion has done some bad things but what about capitalism? The North American media? Patriarchy? So on and so forth. Either we let our children out the front doors or we don’t: religion isn’t different from anything else, IMO.
And I agree with Nullo that you are generalizing.