Your thoughts on intelligent life forms

[Stewie7Griffin]

To be honest, the main reason I believe in extra-terrestrial beings is the fact that the universe is too big to not have life somewhere else. A grain of sand compared to the Earth isn't even nearly a good enough example of the size difference.

*EDIT* Also, I don't believe in any of these UFO sightings to be extra-terrestrial. If there have been so many UFO sightings and they were all real, they will have tried to communicate directly with us by now, one of their ships would have malfunctioned and crashed, or something along those lines. If they are intelligent (more intelligent than us) enough to come to our planet, that means they're intelligent enough to have rogue (criminals if you will) amongst their race also. Unless they have a government that is visiting our planet without the rest of their planet knowing (hey, maybe we're doing the same, we just haven't been told), their technologies aren't kept secret to the general public (their general public that is). Therefore, a criminal, or evil one, would have visited our planet already to wreak havoc on us. Last time I checked, no aliens have tried to kill me, or my ancestors.

If there is extra-terrestrial life forms out there some where, they don't know of us, as we don't know of them.