Well you'd be a bit daft to say "there are no unidentified flying objects" cos you can come round my place any time you like and tell the the names and launch dates of all the sattellites overhead. :D
I remember having this row with a saucer nut once who could NOT get it into his tonfoil clad brain that if we know something is a flying saucer, it's not a ufo, cos it's been identified as a spacecraft....WHOOOOOOSH right over his head.
it's idiotic to think we are alone. But even IF interstellar travel is more realistic that we currently believe (a race of Giant Redwoods could cross interstellar distances in an acceptable fraction of their own life time, just a thought)....have you seen where we are?
Let's say you;ve built your first fleet of explorer ships......do you send them inwards toward the galactic hub where stars are mere light months and even weeks apart....or do you send them out into the sticks (ie where we are). Mind you I do not discount the possibility we've had probes or scout ships fly by. After all, our OWN probes will one day reach other star systems.
I usually stop listening to saucer nuts ( and in fact lost all interest in UFO's because of them), when they start talking about guy that look like us. Considering all the evolutionary accidents that lead to our existence as the dominant life here, what possible reason is there to assume the exact same course of developement has occured elswhere..... I mean outside those species directly genetically related to us on THIS world, none of the other intellgent ones look anything like us.
And like the old logic says...why is it always emotionally disturbed unereducated people who have personal encounters with our "lookalike" pals. Why is it never someone with a degree in aerodynamics or xenobiology or astrophysics.....why is it always a pig farmer. Smart enough to built interstellar navigation craft, too dumb to work out that they may get a better sample of humanity from a city or even a university.
Oh and my other thing about saucer nuts......
"they're tryin to hide it all man, THEY don;t want you to know, it's OUR duty to bring you this information"
"well thank you, I'll take one of these interesting looking photocopied 10 sheet A4 pamphlets"
"certainly, that'll be £300"
Hmmmmmmmm