IF and it is a bloody big if, there is other life out there and they can reach us by interstellar travel, which is quite hard after all even if you can travel at the speed of light you will only travel 5,878,625,373,183.61 Miles in a year. In comparison our Galaxy the Milky Way is 100,000 light years across.
So these Aliens are really really clever.... SO why do they only pick up Mad American Rednecks? Slightly unhinged people? If such beings exist, why have they not landed at the UN? or the White House? or Red Square? If they can travel such vast distances, they will be able to translate our language. No problem.
I have no doubt that there is intelligent life out there, but whether they can visit us, well I doubt that.