See, we are looking at these things through OUR perspective, which imo, is totally the wrong way to do it. If there are other lifeforms out there (and I'm sure there are, the Universe is too vast for us to be alone), it would be totally alien
to us as to be unrecognizable. Which is why I view SETI as kind of a lost cause, even their stage in civilization would probably be either far more advanced, extinct, or totally primitive, which would of course, probably make it impossible for us to communicate with them.
Hollywood glamorized the anthropomorphic alien, forgetting the fact that we ourselves went through billions of years of accidents and whatnot to shape what we are now. Who can even imagine what forms other lifeforms may take, or even if we would consider them lifeforms.
Sure there's a disticnt possibility, what with the vastness of the universe, that somewhere in space AND time, another civilization of beings similar to us developed. IF the universe is infinite, then that's not only a possibilty, but a certainty that will repeat again and again.
But for the most part, I think they are nothing like Yoda. ;D They could for example take the form of minerals with very slow metabolism that to a human observer they're nothing but a hunk of rock, when in fact the rock may actually be in mid-conversation with an adjacent hunk of rock for three millenia now.
Or they could be really microscopic. Or they could be manic jabbering beings in a different timeframe than us, that one of em can tell you his name, all the names of his race, explain his spaceship's energy source, ask about your own race, and recite his entire planet's history in 2 seconds.
Or they can be massive sentient nebulae that blanket entire star sytems. etc.
As for UFO's... I used to think it was utter bullshit. But I'm not too sure anymore, after me and my family had a sighting a few months back. rofl. It was weird... to say the least. But yeah, I still don't believe they actually fly around in saucers abducting cattle and stuff.
But... well... I dunno how to explain what we saw. Probably a freak natural phenomenon or something.
Hrmmm... do I need a shrink?