A long time ago, far, far away, there a young prince who had been brought up sorrounded by luxury and with his every need fulfilled. As his father was a King, he lived in a palace and had servants and the best of everything. However as he grew to maturity and left the palace walls, he was confronted by sights that disturbed his sheltered life. He once saw a funeral procession making its way to the funeral ground; on another occasion, he poor old fellow who was so infirm he could barely walk; another time a man stricken by some dreadful illness. But then, on one of these tours, he saw a travelling monk, clad only in a simple robe, and who seemed to him at peace with the world.
These sights caused the prince to wonder about this very question. Certainly, he did not have to worry about his circumstance; but it was clear to him that no matter how rich he was, he still would fall victim to old age and death, and perhaps to illness. So he decided to pursue the life of the wandering monk, to see if there was some truth he could find that was less impermanent than his worldly life. Because, he thought, no matter what your situation, you will always have things happen that you don't want, and loose things that you do want, and in the worldly life there seems no lasting peace.
That prince's name was Gautama Siddhartha, who left his sleeping family and all of his possessions, and who meditated on it for 6 years in the forest before finally realising that higher truth. At which time, he became known as the Buddha.