Why did Sargeras betray Titan?

The betrayal of Sargeras For a time, evil entities from the twisted underworld broke into Titan's world, and the Pantheon chose Sargeras, the most powerful warrior, as the first line of defense. For thousands of years, Sargeras, a noble giant who melts copper and iron, has been doing his duty. As long as he finds the devil, he will destroy it. For thousands of years, Sargeras met two powerful demon races, both of whom sought to gain power and dominate the universe. Ereda, a race of evil wizards, invaded many worlds with witchcraft, and the indigenous people were turned into demons by their witchcraft. Although Sargeras is strong enough to deal with Ereda, he is immersed in thinking about these deformed demons. Because the great Titan could not imagine such depravity, he fell into painful thinking. Although he was very upset, he still wiped out the wizards of Arida from the universe and sealed them in a corner of the chaotic underworld. With the deepening of doubts, Sargeras was ordered to expel another force that wanted to destroy the Titan's order: Natrizm. This dark vampire race (also known as the Lord of Fear) also conquered some worlds by leading the inhabitants of the world into darkness. By manipulating the consciousness of creatures, they make them hate and break their promises, thus bringing them into darkness. Sargeras easily defeated Natherezem, but the fall of Natherezem deeply affected him. Chaos and despair disturbed Sargeras' breathing, and he lost all his beliefs, not only in the task, but in his whole orderly vision. Finally, he thinks it is foolish to create order. In the dark and lonely universe, darkness and depravity are absolute. His men advised him to give up the wrong idea, but he ignored their "optimistic fantasy" about "self-stupidity" After breaking with his identity, Sargeras began to find his place in the universe. Although the Pantheon was deeply saddened by his departure, it was difficult for the Titans to predict how far their brotherhood would go. When madness devoured his last brave soul, Sargeras believed that Titan himself was responsible for the failure of creation. Finally, he decided to build an unstoppable army to destroy the orderly world created by Titan. Even Sargeras, in the form of Titan, became distorted, and sin polluted his holy mind. His eyes, hair and beard are burning, his metal skin is cracked, and a burning stove representing anger protrudes from his body. The furious Sargeras tore up the prisons in Arida and Natlezim, releasing the disgusting demons. These cunning creatures bow their heads in the roar of Titan's huge waves and want to do something evil for their master! From the powerful Ereda, Sargeras chose two soldiers to command the demon army. Liar Kilgardan was sent to spy on other most evil races in the universe and recruit them. The second warrior, Archimonde the Destroyer, was sent to lead the army to defeat all the forces that stopped the Titan's will. Kiel Jia Dan's first step was to capture the vampire, the Fear Lord. As investigators, fear lords are very willing to find primitive races in the universe for their masters and give them to their masters to "pollute" them, and then reorganize them into armies. Ti Tuo Dios, the dark one, was the first server and the first perfect minion of Kiel Jia Dan. He brought the burning will of Sargeras to every corner of the universe. Powerful Archimonde also found his subordinates. He ordered the evil Abyss Lord and their savage leader, Mannoroth the destroyer. Archimonde hopes to build an outstanding force capable of destroying all life. When Sargeras saw that his army was big enough to obey his every command, he rushed into the dark universe. He called his growing army the Burning Legion. I still don't know how many worlds in the universe are burning in their evil jihad. ......