Its courtesy, manners. Like when someone says 'hey, how are you? ' you always say 'fine, how are you? ' if we didn't have these constructs we would be bashing eachother over the head with clubs, helps prevent miscommunication "manners", the civilized world... Humans need this because we can be quite nasty by nature and that is not productive

Out of common courtesy. Sadly not so common these days.

Simple courtesy, and a bit of grace.

That's an amazing question. Probably to hide the sarcasm.

your sharp as tack tonight i have to agree 😉

They don't or may not need the compliment. Actually the strangest learning I have learned growing older, is some people are kind and don't need thanks.

I never understood why people say “god bless you” when you sneeze.

How can you put words in the mans mouth like that 🤷🏻‍♂️

I just tell people “John bless you”

My name is John