KennyJC said:
But I still wonder... It's a big universe,
Yep, very big, and if FTL travel isn't possible, the distances are rather unsurmountable.
and if they are aware of our blue planet and our existence,
Well, the only way we have announced our existence is by broadcasting radio waves, which travelling at the speed of light, haven't really gone very far in the great scale of things. To have been visited by speculation from further afield, requires such awesome technology it's hard to comprehend. BUT, if they did have such technology, it's hard to imagine that other fields wouldn't have advanced in parallel, such as medical science, stealth, etc, and so the need to abduct and anally probe humans, and if they did, not being able to get away with it, is questionable to say the least!
they just might be interested in us. It will be difficult to get concrete proof though, especially if they wish their presence to be unknown to us.
Ah, there you go. When we observe animals in the wild, we try to not disturb them. We build camouflaged hides, and observe using long lenses. I'm sure aliens would be interested in us, but would they meddle? Perhaps not, they would perhaps let us make our own mistakes, and learn from our own growing pains. After all, a wasteful exploiting culture, who pillage and rape planets for their resources, and make them uninhabitable, is not one you want to help survive long enough for them to develop space travel and spread their disease. If they gave us their technology, we wouldn't appreciate it, we'd still be wasteful and exploitative. I think we would have to prove ourselves if they were watching.
Not that I think they are. I'd love it to be true, but I think we return to the first point. That space is big, very, very big, and while I think it's unlikely we are alone in the Universe, I think it is equally unlikely we'll ever meet, which really is the saddest thing.