According to the doctrine of Voice-hearer Vehicle, due to numerous obstacles, it is more difficult to cultivate oneself intently and purely at home. Such a practitioner can only achieve the initial fruition of casting off wrong views theoretically, or at most, achieve the third fruition by casting off misleading thoughts of the sensuous world, and he can never achieve Nibbana in this life. A homeless life is free and detached. It is easier to concentrate one’s mind and energy on self-cultivation to achieve the state of egolessness. So it is impossible to attain the status of Arahat without renunciation of the home life. (From Essentials of Buddhism: Questions and Answers)