And maybe when they are too young to learn fully/ to truly knowlingly accept religion into their life it is just the only path that appears to unveil before the, but as adults, I think people choose to include religion into their lives.
I think we should again consider that not everyone operates the same way. We are a type site, we need to remember that different personalities prioritize different things in life.
For types that instinctive collect information and then make internal judgments based on the essence of that data, changing one's religious beliefs is far simpler than for a personality type that is imprinted by the original worldview and then has values like loyalty, faithfulness, family unity, and similar things being prioritized with basically evaluate one's behavior in conformance with the original worldview.
The difference in priorities (from the perspective of the individual personality) helps to explain in part why some people grow up and end up leaving or rejecting the religion they were taught and why others end up remaining or even finding and clinging to it.
So in regards to the quote above, you might believe that adults are indeed "choosing" their worldview; I am proposing that, while I think that is at core the responsibility of every adult (and they are indeed "choosing" it), the anxiety they would face at rejecting it is FAR more than anxiety I might have felt or some other evaluative-style personality might have felt. Our personalities are geared to evaluate, then accept/reject based on data, our foundation is located within the evaluation process itself and not necessarily the outcome, we trust our PROCESS; but if you're a personality who only has one way of viewing the world and godliness is based on being faithful to it and you can't SEE another, it's nearly impossible to rise above the anxiety of casting it aside and not being able to trust your PERCEPTION. What would take its place?