Many people have seemingly lost the concept of common courtesy these days. If someone says hi to you, respond. If you sneeze and someone says ‘God Bless You’,respond with ‘Thank you’ even if it is not your belief or religion or whatever. That person is not trying to tick you off, rather they are being polite and common courtesy begs us to be polite back even if we are not ‘in the mood’ to do so. Think about it; if there is a decline in courtesy responses, there will follow a decline in common courtesy.