There are roughly 2 trillion stars (solar systems) in our Milky Way galaxy, and there are roughly 2 trillion other galaxies out there. Most solar systems are similar to ours in that there are at least multiple planets in them. Do the math and there are just a ridiculous number of planets out there, and maybe even more moons (which are also potentially inhabitable) Many of those planets aren’t inhabitable (too hot, too cold, or they are gas giants), but an astronomical number of them are at least rocky planets at a correct distance from their star to sustain life. There is absolutely life out there somewhere, the universe is just too large for there not to be life out there. There’s a good chance we will never find it though because the closest potential inhabitable planets are light years away and unless our space travel technology advances way past what we are currently capable of, how are we ever gonna know? That being said, it has recently been discovered that one of Saturn’s moons has a liquid water ocean underneath it’s frozen exterior being heated by its core. This is our current best bet for finding life somewhere other than earth. Of course, if there is life there, I’m sure it would just be tube worms or bacteria, but still.