That's true, alien life would probably function very differently to us. I see what you're saying, but I can't say I agree. The universe is a big place, even our galaxy alone is a big place at about 100,000 light years across. That alone is a pretty unfathomable distance. It's hard to accept that there isn't any alien civilization out there. The big problem is just the sheer distance. I mean the nearest earth-like planet is already 24 light years away, and even then 'earth-like' is a bit of a stretch. I'm of the opinion that there definitely are aliens out there and almost certainly ones that would be able to hear our messages. I don't think they'll get them for a long, long time though, and by the time they get them and send something back, humans mightn't be around to receive a reply.If there were aliens out there they wouldn't be so hard to find.