Bless You?

I don’t understand it when people say “Bless you” after someone sneezes. No one is possessed and there are no demons flying out of anyone’s nose. How archaic is someone’s thinking that anyone still says this?

Because I have these thoughts, I stopped saying anything long ago. So after someone sneezes, I refuse to say anything. This draws ire after a sneeze - “What the fuck, asshole? You don’t say ‘Bless you’ after I sneeze?” It’s not exactly their response, but people seriously start looking at you with this intent when you completely ignore their sneezes. I mean, it’s just a sneeze! Why should I feel compelled to say anything just because YOU sneezed? It’s just crazy to me that this became a social pressure. I’ll have none of it thank you! Go blow your nose, BTW! It’s making me sick!