If i had a friend sneeze next to me i would say god bless you... Out of courtesy even though i do not belive in god too many people think god is associated with christianty or some other major organized religion. Too me my god is a shiny rock i found when i was 12. And for anyone else god could be money or cows or magic mushrooms whatever. So when i say god bless you im really saying "may my shiny rock bless you"So to answer you question i dont think the term needs to be changed nor does our money or pledge of allegence people just need to stop being so anal about a three letter word.