If you're raised in a house where it's okay for one group to eat and another to cook, or for one group to get more education money than the other or to be more free than the other, or where one parent gives in to the will of the other or may be verbally or even physically abused by the other. This gives you an idea of human worth.
Little things do matter. Sometimes, little things matter the most. Everybody pays a lot of attention to big things, but nobody seems to understand that big things are almost always made up of little things. When you ignore little things, they often turn into big things that have become a lot harder to handle.