Something Interesting, but weird/different

What if our whole lives were a dream. What if we were all sleeping or stuck in some different dimension. Maybe there is another world out there besides planet earth. There has to be an explanation of  why do we feel not here but we are here physically. Maybe our lives right now are trial runs. Our loved ones who are no longer with us are probably having a grand time wherever they are. I think after we all finish this life we move forward into our second lives. This world is filled with wonders. Its a thought or a theory to think about or research.