I do believe lives out of our earth can be discovered very soon. Many countries have engaged in space competition. With more advance in technology and huge resourced dumped in, it may happen. However, for sure the living organisms firstly be found must be of very simple form and very far away from civilization.
I often see space alien and UFO in movies or science fiction. I think ET may be true, but it is difficult to prove. It needs more time, more money and more advanced communication way to search outer life.
I believe that there're aliens in outer space. The universe capacious and the Earth is like a sand in the boundless universe, not to mention the humans.