All depends upon your point of view.
I've never personally seen an extraterrestrial, but I don't rule out the possibility that other intelligent species exist elsewhere in the universe, and that they may be sufficiently advanced to be able to travel the cosmos.
I've also never seen anything that I could identify as an intelligently controlled craft of non-earthly origin, but I have seen some things that are just shy of that. I still have no explanation for what they were, but I can tell you one thing. We don't have anything that can do what I saw.
Yes, but your comments are independent of what actually transpires in the cases of contacts of UFO’s and the like. The phenomenon is very much like claimed encounters with supernatural creatures. It’s loony tunes stuff.