I do believe other life forms are out there.
If Einstein, Hawking, and the rest of the scientific communities that give us the understanding of the Universe say there are, I believe. Let just say other humanoids life forms out there had there “industrial revolution” 30,000-50,000 years ago before ours. That seems like very long time, but in terms of the Universe… it’s nothing. Imagine the advancement Humans will have in 50,000 years. Look at the advancement of Humans just the last 200 years. From saying flying is impossible to flying 3 times faster then sound. Heck…. just look at the advancement since the internet the last 20 years. In 50,000 years it might really be like Star Trek, Star Wars, or even like StarCraft.