I am usually a rather blunt speaker, and I have no time for circumlocutions. I also dislike a lot of modern political correctness. My attitude is that anyone who is secure in their own beliefs, knowledge or skills should be perfectly happy to jest about anything. I am sometimes accused of making inappropriate jokes but I am more concerned if I make un-funny jokes.
Amazingly, speaking bluntly - and sometimes swearing too - has never got me into particularly hot water. I've had the occasional stern look, and once a rebuking email, but on the whole I believe that most people appreciate plain speaking.
So please, I am not "not religious", I'm an atheist. When I am dead, I will not have "passed away", I will have died. Please say so.