There was a baby born, he was called Siddhartha Gautama, he was the son of the king. One day he received a prophecy saying that he will be a king or a holy man, his father chose being king.
While Siddhartha was in the castle, he never saw anything behind the walls of the castle, he was treated perfectly, he didn't know what being old or death was.
Then, he decided to go and see what the other side of the wall of the castle was waiting for him. It was the first time that he saw that people there, homeless and nearly dying. He was very impressed.
There is no point of living, all that happen is that you get old and then you die. It´s insignificant.
After going to the city, he though:
He left the castle, when he saw a man that was with a very big smile and was asking for arms. He thought that could be answer and that is what he did, he made the same thing as that man, he escape from the palace into the woods.
This is what he did: he found 5 man, naked and they told him that the only way, is to make your body suffer so you can set your spirit free. He didn't have enough food in 6 weeks, but a women came and offer him some food. He refused it.