Chaosmancer
Legend
Ok, I had unplugged from the discussion, but this is a very different matter. We can't rule out other intelligent species out there in the universe, but we can't guarantee they existing, and if they exist, we cannot really ever hope to ever meaningfully interact with them. The universe is truly gigantic with colossal distances between stars. We can only ever know a fraction of space and everything else outside of it is unknowable. Even then, we are limited to only know as much information as can be carried out by light and other electromagnetic waves. To actually land somewhere, we are limited to the places that can be visited in a human lifetime -a generation ship would be a pipe dream too-. Yes, theoretically something like warp is possible, but in practice you need the ability to harness a black hole on command and everything between the starting and ending point is torn to shreds in the process. And no, there isn't many outs that a civilization out there could take short of actual magic.
But even if there is a way to actually travel the cosmos within a human lifetime, there is no guarantee we will find life out there. Life as we know it is fragile, and theoretical more exotic life isn't a given either. Even if we find it, intelligence isn't a given either. Evolution is random and without a theleological purpose. Out of the millions -if not billions or trillions- of species that have inhabited earth, how many times has intelligence evolved? Only a handful, and if we are talking about human-like intelligence, only once in us and our extinct sibling species that we either outcompeted, killed or loved to death.
So TLDR: Intelligent life is extremely unlikely out there. If it is out there, it is too far away to even know about it, let alone have any kind of meaningful interaction with. And let's rule out having actual physical contact of any kind short of actual magic.
Right, but, you are kind of missing a big point here. Life with human level intelligence did evolve. This means the chance is above zero. So, let's say it is truly an astronomical number, and say the chances are 1 in a trillion, which is something that likely has never happened on Earth (you start getting into theoritical by this point in stats)
Our Local Group, which is a tiny tiny section of the known universe, is something that will never be out of reach, and it is likely the limit of humanities growth. The Local group has more than 1.24 Trillion STARS. Not planets, stars. And it has more, because those are just the three largest galaxies (The Milky Way, Andromeda, and Triangulu,) there are another 50 or so smaller galaxies as well. If we assume at least 6 planets for every star.... then even at 1 in a trillion chances, just in the three largest galaxies, we would expect to see six different places where human level intelligence grows and flourishes.
And that is assuming we are rare. We might not be. It might be that every planet that supports diverse life gives rise to human-like intelligence, after all, before we out-competed them, we had a lot of cousins and the like as a species that were equally intelligent and sapient. So it could be that most habitable planets will eventually give rise to alien life.
And yes, it could be that technology to move fast enough to meaningfully interact with this life is not something we are likely to develop... but then again, being fast enough doesn't matter if you are spreading enough. If we send out colony ships for example, we might land and find aliens. And THOSE humans will have meaningful interactions with THOSE aliens. And considering the human need to expand, to explore, to go where we have never gone before.... that becomes very very likely. Even if only six sapient species ever exist, if everyone is trying to expand within the same limited space, we will one day find each other. It becomes... inevitable