Its probably not the ancient religion they want to defend, but the way of life it allows them. Imagine someone barges in to your home and starts creating rules

Its probably not the ancient religion they want to defend, but the way of life it allows them. Imagine someone barges in to your home and starts creating rules for you - e.g. from now only you only pee sitting down on the toilet. You also need to go to bed at 9pm sharp. All for your own good, etc...