Humans today are in a race for their very survival. It is essential that each generation work towards it's full potential as to aid the development of space travel and colonization. It's in our DNA, our primary function is to survive. So at some point that will become the absolute driving force which leads to developing methods to travel in space at beyond light speed speeds to "spread our seed". It all started on earth and we evolved over time and now humanity is that leap from earth to another planet and at that point there may be a major shift in evolution and those shifts will grow and intensify as we further colonize the universe. Think about it eh ?