Do u blieve on existence of Aliens

I dont believe in it.....It is only a concept made by the story writers to get their stories sold.....

I absolutely think that there is smthng in this universe except humans and they are trying to constantly touch up with us. But nothing of this sort has happened this far. I hope i wud be able to see them in my lifetime, from earth or from space (if ever oppurtunty comes of travelling in space)...