I think you’re right to an extent—we have all been highly influenced by outside factors BUT I think you are wrong about there being no mental individuality. Just because someone was made aware of something (religion, science, anything) doesn’t mean they a.) even necessarily believe it or b.) can’t think independently about that subject. So there comes the individuality….I think we are all different mentally, its simply that some people do not choose to use their magnificent brains to their full capacity—they hear something and therefore believe it. For those people maybe they are mentally similar. But I don’t think that goes for everyone.