I used to enjoy inviting them and the Latter days in to enmesh them in correct Torah ...
nowadays at the door i point to my Mezuzah, and send them away ....
Gosh, my father was the same, i still have my Britannica ....
he also encouraged me to go to the library to look up any questions i may have re the world.
As many have said, Read ... lots ...
and perhaps it may also help get a fuller insight
to study the culture of the people in that time and place where the religion emerged ...
Oh and in countries with a social welfare system like here where single parents get govt. support, some produce children to get paid ... one woman i know here produced 5 consecutive children to different men each about 12 - 14 years apart to stay on her benefit.