There is an estimated 400+billion galaxies out there, 200 billion stars alone in the Milky Way. I'm not making this stat again. I'm not someone with superior intelligence(lol) ,was just mentioning that was published in papers. So the chances there is life out there is inevitable. Likely we will know in the near future, improbable. Till then, lets not mock researchers behind SETI and Drake equation trying to find lifes out there. They do know, lifes out there, it's just whole bunch of religious fanatics and critics like you —one of the reasons being— to whom they want to answer with evidence of their findings. Well, universe is really vast and unimaginably infinite big, if there wasn't any life, it'll be an awful waste of space(not exact quote but it was catchy to say). It is simply hard to digest that we're the only one planet with life. I once again adamantly say, there are millions of planets out there with civilizations. Sometimes you've to listen to your voice(heart) :D