Universe - Fermi Paradox

Ever since we started looking through the stars by telescope. We as a human began to question the very fabric of space time and life beyond the earth. This fascination still drive us today to look for life beyond earth by sending more probes missions and Hubble Telescope. The life itself is strange enough to begin here. Considering billions of galaxies outside the milky way there must be something outside. 
What if life already existed before us and died because the technology that they had been using was causing war in their planets leading to their unfaithful end. As we graze upon the billions of galaxies through telescope our technology is not powerful to see them yet. 
Or other possibilities such as aliens don't want to communicate with us by the fact that our civilisation is not advance enough or aliens are just observing the civilisation to learn a species just as we learn about animals on their behaviour, communication and understanding. The another fact is that every race that was out there was destroyed or killed by the other civilisation who were much more advance than they were, as we human being have been doing for these past centuries colonising for resources. The signal that send for help might reach to us in millions of years to reach. Even the beep coming from space mean something very useful to us. But by the time it reaches to us they will be long gone.
Are we really alone in this universe??
As we see the night sky billions of earth like planets must have some sort of trace behind it. The planets might also have a different kind of alien races. Our mere imagination in sci-fi movies might be even real just like Star Wars, Star Trek and Interstellar. Now as we think of life outside the earth, our willingness to venture outside our solar system will give us spark to travel for planets, resources and to colonise planets.
In the near future we might even have our own galactic government and become a alien ourselves. There will come a time where alien contact is imminent but we must focus on peace than war. The alien we thought as aliens may not even aliens they might be a A.I so advance that they have their own civilisation. In the future venturing into space will be the only option for human civilisation to grow a colony for resources. By the time that we reach our past articles, videos and prediction might get forgotten. The greatest people who saw space as a future will be forever remembered as a Icon who did the impossible possible.