He didn't live the Princely life, he followed after his father and became a hermit and meditated. His mother also publicly reproached Buddha for his dereliction or familial duties, that wasn't in the article I linked. Buddha turned it into a lecture about how Karma follows you even after enlightenment. It was kind of a jerk move, and shocked me when I read it. Kind of like finding out Mother Theresa liked the suffering of the poor, and Gandhi was an asexual weirdo in his later years.