I have to see it to believe it

I wouldn't even believe it if I saw it. We've been searching for signs of intelligent life for hundreds of years and there's just no evidence of it. Life, itself, is extremely rare. When you think about all the hurdles that must be overcome for life to form, you'd realize that we shouldn't even exist. The fact that you, I, or anyone else, was ever born, is truly a miracle.

FWIW, Aliens could (and should) exist. It could be that there footprints (light, radio waves, etc) have yet to reach us, but it might also never reach us because the universe is expanding faster than the speed of light and that civilization might be gone for good from our perspective.

This is on top of them having overcome all the obstacles needed to travel through the universe.

It could also be that we're the first form of intelligent life. The universe is still pretty young, after all.

Anyway, if you still would trust your eyes, there's a lot of things you could research on your own, and it's all fascinating. The Fermi Paradox or Kardashev Scale is a good starting point. From there, you can start looking at what is Light Speed Travel and then Faster Than Light Speed Travel to understand just what we have to overcome, which is virtually impossible. You could also look at videos discussing the issue of Space Colonization.

I have to see it to believe it

I wouldn't even believe it if I saw it. We've been searching for signs of intelligent life for hundreds of years and there's just no evidence of it. Life, itself, is extremely rare. When you think about all the hurdles that must be overcome for life to form, you'd realize that we shouldn't even exist. The fact that you, I, or anyone else, was ever born, is truly a miracle.

FWIW, Aliens could (and should) exist. It could be that there footprints (light, radio waves, etc) have yet to reach us, but it might also never reach us because the universe is expanding faster than the speed of light and that civilization might be gone for good from our perspective.

This is on top of them having overcome all the obstacles needed to travel through the universe.

It could also be that we're the first form of intelligent life. The universe is still pretty young, after all.

Anyway, if you still would trust your eyes, there's a lot of things you could research on your own, and it's all fascinating. The Fermi Paradox or Kardashev Scale is a good starting point. From there, you can start looking at what is Light Speed Travel and then Faster Than Light Speed Travel to understand just what we have to overcome, which is virtually impossible. You could also look at videos discussing the issue of Space Colonization.