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Life across the universe, I think there is life across this universe and I like to enjoy thinking that life is much more exotic and aline than anything our minds can imagine. I also believe that there is life across many different dimensions and realities (but I do not believe every dimension is a slightly different Version of our own).

I doubt life hasn't formed elsewhere. I suspect the universe is teeming with life.

Also, in a first contact situation, I think humanity would start any war simply from our B-Movie panic attacks at the thought of alien contact.

Besides, here's some food for thought...
Someday, in the future, we'll go out into space and setup colonies. After a few hundred or even thousand years, we'll find those humans aren't really related to us because evolution changed them.