There is no such thing as extra-terrestrial life forms.

yes women!!!

yes there have been way to many UFO crashes on this planet

Do I think there is intelligent life on other planets? Absolutely

Do I think that they have been to Earth? No

The famous 1947 Roswell Incident was not a US cover up of aliens it was a failed US military operation - the US fighter plane crashed in the desert killing all on board.

Aliens were believed to have built the pyramids - no. Egyptians were an intelligent ancient race of people who used millions of slave labourers to build the pyramids. The pyramids are built from huge limestone blocks and the labourers had to move and lift the blocks into place using levers. Amazing how the pyramids were built by ancient humans long time ago - some of the pyramids were built 3 or 4 thousands of years ago. Pyramids will last forever due to their design.

Some people believe alien or ET involvement had a hand in quite a lot of other amazing human achievements over the course of history. The ideas and designs of some famous architecture designs seem to be of alien nature. But whether you believe it or not humans have created everything himself. Aliens are not real and they exist only in sci-fi films/books/video games to entertain people.

Star Wars and Star Trek and many other sci-fi franchises have made billions of dollars in profits over the years due to human interest in aliens.

Oh, come on guys! Crop circles prove it all! How else would they appear if it wasn't for aliens!

Seriously, I think that Calvin and Hobbes has a great quote for this; “Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.” =)

No, I don't believe that it has.

No one ever read the Bible?

When men began to increase in number on the earth and daughters were born to them,  2 the sons of God saw that the daughters of men were beautiful, and they married any of them they chose.  3 Then the Lord said, “My Spirit will not contend witha man forever, for he is mortal; his days will be a hundred and twenty years.”

 4 The Nephilim were on the earth in those days—and also afterward—when the sons of God went to the daughters of men and had children by them. They were the heroes of old, men of renown.

 5 The Lord saw how great man’s wickedness on the earth had become, and that every inclination of the thoughts of his heart was only evil all the time.  6 The Lord was grieved that he had made man on the earth, and his heart was filled with pain.  7 So the Lord said, “I will wipe mankind, whom I have created, from the face of the earth—men and animals, and creatures that move along the ground, and birds of the air—for I am grieved that I have made them.”  8 But Noah found favor in the eyes of the Lord.

Sons of God married the daugheters of men. The daughters of men were homo sapiens, the Sons of God were something else.

Ingrid Cold would like to have a word with all of you...

"Great tragedy on the river Ohio..."

I absolutely think life exists outside of our world. I don't know if its intelligent or not (or even organic) but we exist and the universe is bloody huge meaning the the chances of life existing elsewhere is pretty good.

Have other life-forms visited this planet? Probably not though.