If humankind launched it’s finest rocket into deep space and it traveled a span of time as great as the entire length of human history, at the end of all those millennia of travel that rocket would only be in the middle of nowhere, not even a third of the way to the next closest star.
Earth is our home. Love her. Care for her. Despite all the hype about new worlds being discovered, we aren’t going to them. We must care for our Earth Mother or die with her.