I now live in a building that has restricted access, so no one can randomly knock on my door. But the last place I lived had a door accessible to anyone who might walk up. Anyone pushing religion was kindly told to “Get Fucked,” and I closed the door. It happened maybe three times over the years I lived there. I’m otherwise very polite to strangers.
Coming to a stranger’s home and presuming you know better than they on such a (in their mind) important topic. To knock on my door and basically tell me that I’m wrong and they know the right answer. Get Fucked!