To me it is very important. There are only a few remnants of the human race and of the Earth that will be left around after the Sun shifts into a Red Giant and encompasses the Earth.
As of now, this is what will be left from the entire history of humanity.
Pioneer 10
Pioneer 11...
Would the we be moving at the speed of light in reference to a planet/observer that is beyond the visible limit of the universe? Granted they could never observe us due to expansion of the universe.