"Not that I'm a believer, but there have been sightings around the globe."
And yet not one single credible photograph, video, recording or corroboration in a planet of 7.8 billion people with over 6.5 billion smartphones.
There are *definitely* 100% UFOs. Things we can't identify. Because the evidence is so terribly poor. It's like holding up a blurry, badly processed photo of a blob and going "See, evidence!" and expecting the world to believe you have caught an alien/ghost//bigfoot/honest politician on camera.
Most of those UFOs will be nothing at all. Specks on the camera, sunlight, out-of-focus ordinary object confusing scale.
Some of those UFOs might even be aircraft... foreign, spies, drones, *cough* Chinese weather balloons *cough* etc. etc. etc. That's what the Pentagon are actually interested in.
None of them are aliens.
And yet: There are absolutely *definitely* 100% aliens out there. Just nowhere (and no-when) we will even encounter each other even blasting signals out into space 24/7 at the maximum power we can muster from the second we discovered radio/lasers/whatever to the second our civilisations collapse.
And if you haven't noticed, humans - all humans, from all walks of life - are absolutely unreliable witnesses. RAF or not. Politician or not. Scientist or not. There are cranks, crackpots, people with mental health issues, people who age, get dementia, make up stories, lie, turn to conspiracy theories, join cults, or even outright believe in things that simply don't exist (like, hey, gods and ghosts and things). Even among top-tier PhDs and Nobel Prize winners to the highest general in the land.
Saying there have been sightings around the globe doesn't mean a damn thing, until one vaguely credible person (hell, even a journalist!) stands up with one good photograph or video that clearly shows something we absolutely can attribute to non-human creation, ever, in the history of the world.
Strangely, the more CCTV, cameras, smartphones, selfies and cloud-connected automatic uploads we have in the world, the fewer UFO sightings we actually get per person. It's almost like having lots of good quality, easy-to-operate cameras in the hands of every ordinary person isn't actually making any difference to our detection of these mystical beings that are crashing into Earth, flying around populated locations, and posing a massive threat to the world's militaries if they were to exist. But find a blue/gold dress photo and we're all poring over it trying to analyse it.
It's a nonsense, and while aliens will exist (just by sheer weight of numbers of galaxies), I'm a far, far, far greater believer in the Drake equation than I am in some guy who say something briefly once while pulling 8Gs shortly because being discharged on mental health grounds after suffering immense shellshock.