Everyone is born into the world entirely ignorant. Cultures, customs, languages, and superstitions espoused by their parents, teachers, and peers are adopted as a matter of survival. And as the individual develops more autonomy, they use the information they gathered in their youth to navigate into new cultures and belief systems, in pursuit of improved material conditions.
You can be born into a Catholic family and become Atheist just as easily as you can be born into an Atheist family and become Catholic. What has driven the modern collapse in religiosity is - at least in my view - the mass migration driven by economic expansion and ecological collapse. People aren’t just waking up one day and deciding they aren’t gullible anymore. They’re being shuffled around by tidal forces and torn away from the historical cultures and infrastructure that had reproduced their families’ beliefs.
As a kid, my mom was deeply Catholic and tried to get us to attend church. But we moved several times, and after each move we found ourselves at a new church (often not even a Catholic church) with an alien congregation and divergent dogma. So what had rooted her and her sisters and parents and grandparents in Catholicism never took root with me or my sister.
By contrast, my wife’s family lived in Galveston for four generations. Virtually her entire family is devote practicing Catholics. She only slipped through the cracks because… her dad moved around a lot, particularly after her parents got divorced. Everyone else - even two of her transgender cousins - are still practicing. Churches are, at their heart, social institutions. And I think modern New Atheists often miss that fact in their quest to Own The Dumb Pious Folks.
Right. Because there’s no inherent reason not to do so. And little kids tend to want to follow along with what they’re elders are doing.
Kids are told that they get presents by pleasing their parents. And then the decision making / agency is displaced onto a fictitious figure. That’s a very neat analogy for religion in the aggregate. Whether or not you “believe in Santa”, you’re still getting gifts based on your parents’ resources and generosity. If you want the newest kids’ favorite widget, you’re following the letter of the law whether or not you adhere to the spirit.
If you’ve got friends/family who are members/do go, sure. Because they’re your social connection.
But you’ll struggle to join a community event if you don’t know anybody - or even when/where the event takes place. Nevermind knowing what’s in the works, what needs volunteers, what needs money, and who is in charge of leading them. The more you want to participate, the more you need to attend the religious church functions. The more you want to get into leadership, the more you need to demonstrate your piety.