Prince Siddhārtha … was born as the heir to King Śuddhodana. His father-king wanting to place his son on the throne, abdicated his rule, but Prince Siddhārtha, acting against the wish of his father-king, left the royal castle in the middle of the night. The king regretted his son’s unfilial act, but the first thing that his son did after attaining Buddhahood was to lead King Śuddhodana and Queen Māyā to the Buddhist Way. No parent would advise his (or her) children to leave his home to attain Buddhahood.

Hyōesakan-dono Gohenji, Answer to Lord Ikegami Munenaga, Writings of Nichiren Shōnin, Volume 6, Followers I, Page 94