Glad you are curious! Maybe you'll have a dramatic daydreaming insight and solve it. :D

One thing worth looking into is the "Fermi Paradox". It concerns not only the possibility of intelligent life and communication but interstellar travel. If interstellar travel were possible in even thousands of years and the development of intelligent life capable of achieving it were possible in the current age of the universe then we should've seen signs of it flooding the galaxy by now. We haven't seen a single peep.