It is nonsense to say you have an argument about aliens,ppl will not believe anyway.
there must be some kind of life in the universe,look at it 100000 galaxies probably 120381928392384 planets (just an guess),and who knows if there isnt more than that?
kinda impossible for us to be alone in so huge space,i do believe.If ppl start opening their minds for new things,the human race would be far more conscient of their act and non-violent,but the only problem is: we still think as an cave man.We only think about survival and food, if an zombie apocalypse happened here,just for an ex,the first thing the government would think is to store food,make shelters,and protect even more rich ppl(when the last tree fall,the last animal die and the last river disappear, they will see that money isnt food).
-_-'