why can't the answer simply be that we have not received any signs of ET life because the signals simply have not reached us yet? Assuming that the speed of li

why can't the answer simply be that we have not received any signs of ET life because the signals simply have not reached us yet? Assuming that the speed of light is still the fastest possible thing in the universe, we can infer from the vastness of space that the time required for a signal to reach Earth could be in the millions of years. Furthermore, just because a civilization is advanced, still doesn't mean it is capable of conquering the vastness of space. I think we've been watching too many Startrek and Starwar movies. Space is not something that an advanced civilization can just wonder through. These two points combined probably explain why we haven't encountered any real proof of ET life. Not to mention our time in the universe is merely but a spec in the grand scheme of things. Hardly a blip on anyone's radar.