They're living amongst us, hidden in plain sight.

Maybe.

Maybe they developed technology that made experiences more interesting and exciting they doing the hard work of exploring the galaxy.

Edited by Stirlingsays (22 Jul 2018 2.19pm)

'Who are you and how did you get in here? I'm a locksmith. And, I'm a locksmith.' (Leslie Nielsen)

And many of them are probably posting on this forum

The more important question is, do world governments have any intention of revealing what they know about aliens?

When individuals in former senior positions come out and say they know for a fact that aliens have been here, the majority don't believe them.
What would it take for you to believe?

Setting that aside. The Galaxy is vast and the any potential civilization on another planet could appear and disappear within tens of thousands of years. A mear blink in time. There might have been thousands or even millions of such occurrences over time and yet they would still be incredibly rare in the grand scheme.
For that reason, It would be no surprise if we never discovered any with our limited science. That said, any alien race who were far in advance of our technology might find us in no time if they happen to exist right now. Meeting up would obviously also require technology that is beyond our grasp. Traveling such distances through space could be very weird and wonderful or maybe impossible for biological creatures.

From what I have been told, it has already happened but who can you trust?

If aliens were among us they'd be immigrants. So they can't be among us as we keep hearing that there's no space.

Living down here does have some advantages. At least you can see them cry.

The wrong link....though an enjoyable one.

'Who are you and how did you get in here? I'm a locksmith. And, I'm a locksmith.' (Leslie Nielsen)