Fact - We know of only one intelligent species out of those millions, humans.
Fact - Statistically, based on above facts, if we discover a planet with life forms they are more likely to be uninteligent.
Fact - Someone saying in a film that aliens exist is not a fact, proof or evidence. It is hersey.
MacGuffin, I was a believer, however the shear wieght of statistics and logical thought have brought me to the belief that we are not and likely never have been visited by aliens. I admit there are a few anomolies, such as the Dogan tribes knowlege of stars they should know nothing about, but placed on a scale these anomolies are far outwieghed by by what can be proved.
I think there are far more intelligent species than just 'humans'. Technologically advanced maybe limited to just humans however, one may argue that you can never have more than one advanced species. The evolutionary process always limits any number of species to just one superior,does it not?.
Also I think there is a distinct difference between finding life and life finding us...the second option by default would eliminate the possibility of that said life not being intelligent.