Extraterrestrial civilizations. What is your opinion?

I believe that aliens don't exist. The proof is simple: for believers, it was written that Adam and Eve were the first people.

But who said that aliens are people?

1) (from Ganymede) - Haven't seen it - don't know.
2) Most UFOs have been explained and turned out to be either objects or phenomena in the atmosphere, or meteors. In general, thousands of explained phenomena confirm that UFOs don't exist.

1) This is not proof at all. If I haven't seen something, then it doesn't exist. This is an extremely stupid statement. 2) I agree that UFOs are not the work of aliens. However, we cannot disprove the existence of extraterrestrial civilizations with this fact. Just as we cannot disprove the existence of God (and probably never will be able to).