It isn't just the Christians, and it isn't just the other Religionists, but it's also people from Amway, the Democratic National Party, the Libertarian Party, the Republican Party, panhandlers, Atheists, survivalists, unionists, neighborhood committee advocates, telemarketers, New-Agers, Scientologists (and other cultists), environmentalists, animal rights activists, and just about every other special interest group and pseudoscientific philosophy you can name.
Go ahead ... knock on my door ... leave your tracts, your flyers, your business cards ... I'll burn them all later.

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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.