Why did monks and nuns promise to live their entire lives within their religious communities?

Monks and nuns promise to live their entire lives within their religious communities as a way to fully devote themselves to a life of service to God and to their religious order. By making a lifelong commitment to their community, they demonstrate their dedication to living a life of prayer, spiritual growth, and selfless service to others. This commitment also helps to foster a sense of stability, community, and continuity within the religious order. Additionally, taking lifelong vows of poverty, chastity, and obedience is seen as a way to detach oneself from worldly distractions and focus entirely on spiritual growth and serving God.