I think there probably is life somewhere out there, growing under a rock or something. We always assume that life else where is more intelligent than us maybe is maybe isn't.
If they are anything like us they will wipe themselves out long before interstella travel is close to being possilbe.Look at us we can't even get to mars, even to get out of our solar system is still science fiction.
I think we need to fix up ours world so someone would want to come.We have 3 big problems as i see it. Poverty , Population & politicians. Solution Feed,Reduce ,eradicate
Phil