There is a lot of life in the universe but the distances are utterly many centuries beyond any technology .BTW, I am addressing YOUR ARROGANCE in believing life MUST exist out there based on the THEORIES you've stacked together.Thinking our type of life is the only type is pretty arrogant too.... I've always been of the opinion that life is not unique to our blue marble.
It would be quite arrogant indeed to think our planet is the only one in the infinite array of space to spring life. We don't even have the first clue as to how many viable planets there are in the universe, nonetheless have any clue as to which of those planets bears life or the different forms of life that are possible.
I bet there is a planet of just dinosaurs or just apes