Venator that wasn't aimed at you, its a point.
They are brought up by thier parents in the religion, Once upon a time your point was 100% valid and still is by a great percentage.
But the population of India is Seikh, Hindi, and Muslim. Dublin has Catholics, Protestants and Jews.
As we become the global village such generalisations, no longer conform.
There is also the point that as the devout move into more secular societies they are less likely to follow dogma and think for themselves.