Even if Seamus's father wasn't religious his granparents wqould be and therefore he would be too - it's almost inescapable, like not being religious in say India, the Phillipines or Italy - it just isn't going to happen.

i can sorta see your point as a matter of general impression but i would have to disagree to the analogy to the patils in india. it's a secular country with a majority religion that is not monotheistic. there is certainly a strong presence of agnostics and atheists in india. for eg. some states have democratically elected governments that are parties that identify politically as atheists. just my 2 cents.