What do you guys think of UFO's?

[Prelauncher]

I'm not too sure about all the "alien visits" and I highly doubt that there are aliens on earth. Hopefuly there aren't any aliens on their way here either, and if there would be lets hope they are extremly different from us humans...and every other species on earth. The stronger rules the weaker is the general rule on earth and if they would be the same they'd be very powerful and dangerous since they would have enough technology to travel through space.
But still, I don't think there are or have been aliens here at earth. But I do belive that we are not the only living creatures in the universe.