Why did Siddartha Gautama do after seeing old age, sickness, death, and finally a holy man in the city streets?

After Siddhartha Gautama witnessed old age, sickness, death, and a holy man during his encounters in the city streets, he became deeply disillusioned with the world and realized the impermanence and suffering inherent in human life. This experience led him to renounce his life of luxury and privilege as a prince. He decided to embark on a spiritual journey in search of a way to overcome suffering and attain enlightenment. Siddhartha Gautama then left behind his royal life, his family, and all his material possessions in order to become an ascetic and seek spiritual liberation.