You're not going to get people to accept something that they may have no concept of in this age. Yes, religion still plays a major role in our lives. But in our modern age a lot of separation has occurred that makes us take mundane matters often more seriously than spiritual ones.
Your playing a roleplaying game, use your imagination... There doesn't need to be any massive mind shaking change in your life to roleplay a character. If they cannot accept the IG mechanics of religion it is because they are still playing a RP character like they themselves would act in reallife , making them !@#$e roleplayers.
