Do you believe in extraterrestrial life?

In my personal opinion, I believe that the earth has been visited numerous times by visitors from others worlds in the universe, and, therefore, I believe that we, as humans, are not alone in the universe. Despite the fact that there is no evidence whatsoever to prove that extraterrestrial beings actually exist, I find it hard to believe that the earth is the only planet in the entire universe that flourishes with intelligent beings, because the universe is vast, and man knows very little of it. There are more discoveries in the universe that have been yet to be found. Now, as far as religion is concerned, my belief that extraterrestrial life exists does not tie in with my religious beliefs, because I am an atheist.