Alien's

Just like I dont know if the Big Bang Thoery is entirely correct, I dont know if I believe in alien's. Its hard to imagine anything or anyone on another planet being alive other than us on earth. But scientist have found evidence to prove that there may be life on other planets or that there once was life on other planets. But the stories you hear about people spotting flying disks and seeing aliens doesnt make me believe in them. I think the only way I would ever believe in alien's is if I ever see one with my own eyes.