My son will soon be three years old and happily repeats phrases such as please, thank you, excuse me, when appropriate. When somebody sneezes, he also says "bless you," the way his relatives and most people with whom he has come into contact have said to him in the past.
My husband is an atheist and dislikes any form of religion or celebration of religious belief such as saints days, church ceremonies, anything like that, which I'm fine with. But he is telling our son it is bad to say "bless you" and we always say "gesundheit" instead. Is this not going to cause a lot of unnecessary confusion and bad feeling over a little phrase which will probably be said to him quite a lot throughout his life, and won't kill him?!
I guess if you're going to be an atheist, do it properly and according to what is right for you, just as followers of religions do. I just think small terms found in religion are such a part of life and culture that it will be impossible for DS to avoid them and to try and bar them all from his life will be more bother than it's really worth! AIBU?