This problem is still limited to what you see now. The advanced species that really exist are alien civilizations. I believe that we human beings are still in their infancy. Alien civilization must exist and be a higher species.
Are you serious? Or is it just a guess from your own place, will alien civilization exist? Mankind is the master of the universe.
In ancient civilizations, people believed they lived on a flat plane. The Earth was once believed to be at the center of the solar system and that everything revolved around it. Then people believed that the solar system was at the center of the universe.
And, now some believe they are the only intelligent species in the universe... Do you notice a trend here?