papertyger, are you saying that Christians are scary to you? If so, then I would be interested in knowing why? What is it about Christianity that is scaring you?
Ah! But you're conflating two different questions there.
Christianity is not scary, but Christians, are!
While I could rattle off an entire laundry list of "why," suffice to say factionalization is bad enough, but when each of those factions is convinced, without specific authorization from God, that they nevertheless have His imprimatur, you have the perfect medium for pride to grow, and from pride...all the things pride leads to.