Not sure I understand. My father is catholic. Mother is protestant/evangelical. Both decided in their adulthood to stop practicing it and not push a single speck of it in me, consciously, without caring 'what others will say'. They didn't push me into some religious schools (unlike my wife who has rest of her life to deal with maybe well-meant but massive trauma of strict religious upbringing, psychologists can only help so much). My parents literally defined my cultural upbringing, more than anybody/anything else combined.

Anybody strong enough can do that, but lets be honest here, most people are not that strong and rather will go the path of least friction and most comfort and not the best long term path.

As said, I am eternally thankful to them for this since when looking back I clearly see choices they've made.