It's really awesome to see others asking questions I've asked in the past...Jonny, Lali, everyone really.
I don't have answers and I'm not sure any of us really do. My theory is just that...if I sat around long enough thinking about it I'd probably have so many more questions about it that I would stab my brain out.
I think it would be somewhat arrogant to think we're the only ones in this wide universe, but...as someone else mentioned (I can't remember who) they might not be like us.
Who knows if we would even recognize them as living? Maybe there's a whole species of aliens out there that would look like rocks to us...
I love just thinking about the possibilites.