Absolutely!!
We are here, are we not? It would beyond astounding. I was told once, when I asked this very question, although worded differently. The odds, that we’re the only planet with life among the entire universe would be terribly impossible. There has to be life on other planets. Whether that means something that we we would classify as animals or sentient beings, or just bacteria, is beyond me. But I’m sure that there’s gotta be something.
The possibility or life is endless and our scope of what can potential harbor life (carbon based, H20, etc.) is extremely narrow and only able to reference what very little we know and understand about life in reference to the universe. I agree 100%. To say the least, not only did I see and witness as well as photograph an aircraft of which I have never seen the likes of, so did many others. Perhaps, I took it a little further by contacting the F.A.A. & N.A.S.A. Well, that’s enough said, except for. We’re very stupid for the most. Trying to tackle the universe and existence is like a toddler attending an MIT calculus class.
To sum it up. Earth and everything about it, is very unusual and unlikely. I think this beautiful video explains what I mean.
David Deutsch: What is our place in the cosmos? http://www.ted.com/index.php/talks/view/id/47