I'd run a terrible hosting company, so let's get that out of the way completely. :)

Under Danilo's Fictional Hosting, I'm not saying I would refuse religious content outright, I'm saying I'd be much more cautious about religious content than Marjorie's Baking Blog because religion, as a result of the all too common "I'm better than the rest of you" rule, is just a troublesome topic.

Porn is a troublesome topic too -- many hosts don't permit it. Too much exposure to Dawkins leaves me with only the most feeble of arguments against giving the same treatment to religion.

Personally, I'd think that Mother Teresa, Martin Luther King Jr. and Gandhi add up to a very strong argument against banning religious content. But as it's your (hypothetical) hosting company, you're obviously free to do as you wish. :-)

For the most part, the reasons that hosts don't permit Porn is that pornographers are notoriously bad at paying their bills, and the amount of fraud and theft in the online porn industry is staggering. It's also why it's nearly impossible for pornographers to get merchant accounts with credit card processors.