"What if were the Aliens"

Have you ever thought that we could be aliens....

If there is life on other planets and beyond our solar system (which I believe there is) then we are aliens to the other beings. We cannot be the only planet in the whole of the universe that has life and living organisms on, there must be other beings out there. Its strange to think that there is most probably people on another planet maybe more high tech or living in tribes that are doing exactly the same as us, trying to figure out if there is life beyond them. It baffles me that with all of todays technology we are yet to be certain or find any signs of different worlds with living beings other than planet Earth. I wonder if they would look similar to us or be completely different, scarier yet there may be a superior planet where there is a twin of all of us....