See, told you aliens are real!
Check this out:
Of course, Santa Claus is too!
On a serious note, I actually do think aliens are real. They have been coming often, observing, studying us. And the only reason I think they have not made themselves known to us is this: They're afraid of us. They see all the conflicts and harm we have inflicted on one another, through the wars and riots they have observed through many years, or centuries. And they think, "If they can do this to humans just like themselves, what kind of hospitality would they likely extend to us, aliens?" And so, they have chosen to remain hidden in mystery.
The History Channel - UFO Files Box Set: 2 Disc DVD 400 Min.