I'm not arguing for Utopia and I'm not chasing perfection. Excellence is something different and by striving for it, we can always improve the world around us. There will always be flaws, but they can less destructive as we expand our circle of empathy. Humans use to put cats in bags and burn them for entertainment. They used to take the family to the local hangings for fun. I'm glad we, as a species, have moved beyond those practices (along with many other horrific forms of torture which used to be commonplace). Do we still have issues? Of course, and we always will. That doesn't mean we can't move things forward which improve human wellbeing and help us accomplish more interesting things as a species, such as exploring the universe.