I honestly think there MUST be aliens out there's somewhere. The universe is so expansive.
edit:
There's another theory that says the Universe is so big that statistically speaking, every single possibility will be fulfilled and keeps going. So, there's actually, millions of individuals exactly like us, once the patterns keep repeating. In theory, anything you can imagine exists somewhere out there.
![eek](http://www.atrl.net/forums/images/smilies/images/smilies/eek.gif)