It is always difficult when a great human being dies. Nelson Mandela's passing leaves the world in sadness, but his legacy changed the world - for the better.
We don't appreciate, respect or assist the great leaders in the world --- probably because there are so very few of them.
That didn't matter to Nelson Mandela, though. He just did the right thing. If only the human race could get a clue about how to have principles of decency and quietly, or loudly, live them out.
We are such a global band of self-indulgent, self-important, and self-serving selves. Nelson Mandela is my hero because "he" was the least of his concerns. It takes a remarkable person to get past the "I" of all things truly valuable in this life.