If Regret Is Useful, Why Should I Be an Evil Cultivator?

Zhou Qian traveled through time and space to the vast and unadvanced Origin Continent, a fantasy world where a strong man could hold the sun and moon in his hands and pick up stars, and his feet could reach the stars and rivers in the nine heavens. His father was the emperor of the supreme dynasty Zhou Dynasty. No one in the world dared to disobey his orders. Her mother, the former Saint of Shaking Light Holy Land, was of unparalleled magnificence and dominated the entire region. He is the eldest prince of the Zhou Dynasty. In terms of status, looking at the younger generation in the entire Siyuan Continent, there are very few who can compare with him. With such a magical start, even a pig can take off after crossing over. But Zhou Qian soon discovered that something was wrong. In order to help the Human Emperor Sword suppress the immortal body, Zhou Qian's predecessor actually sacrificed his own bloodline to the Human Emperor Sword to help it suppress the immortal head. He was also cursed by the Immortal's head and became a cripple who could not practice cultivation. He was once favored by thousands of people, but he was reduced to the point where even a dog despised him. His father did not love him, his mother did not love him, his younger brother bullied him, and his clan members insulted him. The predecessor could not bear such a huge gap and died in depression. Facing the cold eyes of his parents and the humiliation of his younger brother, Zhou Qian decisively left the Zhou family and chose to become a lawless evil cultivator. But after he rose to prominence, his relatives begged him for forgiveness. I'm sorry, if regret is useful, why should I be an evil cultivator?