It doesn't offend me and it doesn't make me chuckle. I accept that people believe in the message they are spreading and they sincerely feel they are doing the right thing.
It doesn't offend me at all, they are doing what they feel is right. I respect them for that.
What gives me a chuckle is when I'm told I'm going to hell because I adhere to the authority of the pope, and that the Catholic Church is the whore of Babylon. That I find funny!