Any one out there?

The One Show is celebrating the Year of Astronomy and have started a snippet on the skies. Just brought home that there would be millions of other life forms out there... Then strangely I watched an old Have I got News for You on Dave and there it was about release of old UFO files... all saying the UFO do not exist..Contradictions everywhere.....

What I find strange that we want to find aliens and make contact with them... spending lots of money for that, people researching all their lives. Yet when it comes to using imagination and making movies why do we always portray the aliens are malevolent and out to destroy earth.... not many movies of friendly aliens.. and if what we believe that someone out there is monitoring our transmissions.. would they wish to even bother contacting us when we display the violent responses in imagined situations?

Maybe within series like Star Trek or even Babylon 5 there is some attempt to show a balanced approach that as with humanity there will be some good and some bad or is it that this mixture is our perception only but does not truly occur.

Anyone out there? any thought?