For me, I'm not so prone to speculation as to what might exist so far away from Earth, given that I will be unlikely to know, and I suspect that even if life (intelligent life too, as on Earth) does exist elsewhere, they might be going through/have gone through much the same process as we have had. Still doesn't get me any nearer to the truth though. I would however rather want to see more understanding as to how we do share so much with non-human life here on Earth, and which might be more rewarding to us all as species if we did so.