If there isn’t, it’s sure is a huge waste of space. I don’t know what the odds of life on other planets are because we only have a sample of 1 planet that we know has life. Given the mind boggling amount of stars and galaxies it must be a statistical certainty that there is life on other planets.
The space between the stars is so incredible that is would be impossible to travel that far with our technology.
I imagine that for a technologically advanced, intelligent species to evolve would be highly improbable. To have the means to do interstellar travel would be extremely unlikely assuming that it’s even possible at all.
I think that to such creatures, trekking the universe, they would regard us like we would ants at a picnic. They would barely notice us until we did something to get in their way and then they’d blow us away without the slightest regard to the value of our lives.
I think to them, our lives would be worthless. That’s why I think that the UFO believers must the most ego-centric people of all. To honestly think that we’re worth their time and resources to cause mischief here.