Hey Salamander. Notice how the words "cow mutilation" and "crop circles" are in grey in Nate's post? That means they're links. Click on them.
Who says the universe is infinite? I've never heard anything that said that. I'm pretty sure it's widely agreed upon among scientists that the universe is finite. It's just very large. Anyway, it's mostly empty space.
I'm not going to vote "no", because I technically don't have any conclusive evidence that aliens don't exist. I don't really believe in them, and I've never seen anything believable that indicates their existence.
I'm glad the idea is there though. Science fiction would be so dull without them.