WHY?!? Why is that belief so important to you? Christians tell you over and over that our faith allows for, even EXPECTS, the existence of extraterrestrial life. In the face of that indisputable evidence that the existence of aliens would not weaken our faith in the slightest, you inexplicably cling to, "No, no! If aliens show up, you'll all abandon your faith! You HAVE TO!!!"
Why is that belief so important to you? WHY can you not stand the thought that we'd still be Christians even if we aliens landed at our church picnics?
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The few answers which actually addressed the question amounted to, "But, but … the existence of aliens would violate the way we non-believers exaggerate, distort, and caricaturize Christian beliefs!" I mean … yeah. If Christians believed the things you guys THINK we do, the existence of aliens might be a problem. But we don't. All this does is prove you don't really understand Christianity AT ALL!! Not in the slightest degree.