I ban people on my server for excessive swearing. I don't put up a server, spend my time there, letting other people enjoy themselves, to put up with a bunch of idiots who lack the vocabulary to speak a sentence without including a curse. Nor do I want to put up with idiots who randomly join servers just to swear and leave, thinking that they've outran the Ban, due to leaving too quick for anyone to go to the Admin Menu and ban them. (People forget about their ID's being logged in the BrickMenu)
Simply put, if you go to a server, and the host doesn't want you to swear, you respect his rules.
He's put them there for a reason. He doesn't want to hear you swearing for no real reason.
He also doesn't want to put up with your idiocy and lack of social skills.
Religion is stupid.
/point-dismissed
Jokes aside, don't be silly and turn the topic into any form of religion war. Besides, his point is still valid, even if he is religious.