Talked it over with my husband and he described it as a paradox: if there was a civilazatin advanced enough to have insteller travel, why isn't it here yet?

Then we talked about how rare life might be (hard to figure out, since we have only one example known to us), and then, from that, figured out that intelligent life didn't exist for billions of years.

So, I think there is life (bacteria, protozans, jellyfish?) on other planets. I think there is possibly intelligent life on other planets (humanoids, incredibly smart squids?).

I don't think we will ever meet them. And if we do, the historical relationship between people of advanced technology vs. those with less advanced has never gone well for the less advanced civilization. So, best not to draw attention to ourselves.