It's not clear to me what aspects of religion would be obvious candidates for being described as a 'choice'. Personally, the fundamental aspects seem to operate as primal psychological forces, and overt action in contravention to them rapidly erodes things like confidence and self-esteem, while increasing things like anxiety. Every once in a while, people will definitely work against those pressures, but I would expect that behaviour to be unsustainable in the long term for the vast majority.