OK, then show me your evidence that every single sighting ever, as you claim, is just just a misinterpretation, optical illusion, secret military craft etc.
Ya can't.
Therefore, I go with the more likely explanation.
You keep talking about evidence. Got news for you, "Likely explanations" are NOT evidence, and are more often just peoples opinions, like yours, all based on what *you* consider, "likely explanations".
Got a question for ya gun runner. Do you believe in God?
I don't have evidence for EVERY SINGLE sighting, just like I can't debunk every Bigfoot, Nessie, or leprechaun sighting. I've given you a reasonable basis for my point of view, and nothing you've said comes close to convincing me otherwise. There is a multitude of evidence for UFOs being explained as earthly phenomena, and ZERO evidence for anything extraterrestrial. If there are two possibilities, I will go with the more reasonable one.
So some pilots have seen some strange things in the sky; there's also pilots that say September 11th was an inside job and that a plane never hit the Pentagon. Are you inclined to believe them as well?