I do believe in other "super natural" intelligent life forms, but I think they live on a higher dimension than us. They can see us, but we can't see them.
And I also believe that there are other 3rd dimensional intelligent life forms in our universe. Universe is just too big for there not to be.
I remember when I was seven, something really fucked up happened. This was back when I was in Saudi Arabia. It was summer time. Really fucking hot, so all the windows would be shut, really thick curtains across them. This was in an apartment, over there everthing is made of concrete. So anyways, my sister and I were playing in the living room. As mentioned earlier, there were these really thick heavy curtains drawn across the windows. So anyways, we were leaving the living room with our backs turned towards the curtains, suddenly we hear a loud noise behind us. We turn around and these things were just floating in the air. I recall some glowing guy standing there too, but I think that might be my imagination, not sure. Like all the way up almost against the cieling. O man that was really fucked up, we ran screaming to our mom. I still don't understand how it coulda happened. Windows were closed, there were no vents there or any thing that could have provided such a force.
That apartment complex had a lot of strange things happen in it. We lived on the top floor(there were about 5 I think). Sometimes in the middle of the night you could hear people running really fast on the roof, not just running, but like stomping running. These were concrete apartments, it wasn't easy to transmit such loud sound through walls or cieling. That was kinda wierd, cause no one could go on the roof, there were no animals there either.
My sister and I both recall seeing glowy lights going across the hall right outside of our room at night. There were no lamps or lights in the apartment that would create those shades or shapes.