Why Haven't We Found Alien Life?

Seems like Aliens SHOULD Be Out There!
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With millions of Earth like planets around sun like stars in our galaxy alone, why don't we see intelligent alien life? Or any other life for that matter? It gets especially weird when you factor in new scientific revelations that life on Earth occurred crazy fast! So if you want to help us theorize on the real reasons we haven't found alien life, you should watch today's episode of Space Time!
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Comments:
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References:
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On The History and Future of Cosmic Planet Formation
Behroozi & Peeples 2015, arxiv.org/abs/1...
www.nasa.gov/fe...
Potentially biogenic carbon preserved in a 4.1 billion-year-old zircon
Bell et al. 2015
www.pnas.org/co...