Unfortunately this is one of those things that will always be around, no matter where you are.
There's always going to be some Religious Nut (as I like to call them), ready to try and shove their religious beliefs down your throat and tell you that you're wrong for not believing the same thing they do.
I think between all of us RHUers, we don't have enough fingers and toes to count how many times we've been accosted by the Religious Nuts of the world.
If politely telling them you're not interested isn't working, then it's okay to get snarky.
--Son of Thrognar