Srila Prabhupada

So Caitanya Mahāprabhu also accepted sannyāsa in very young age, when He was only twenty-four years. So why? Tyaktvā tūrṇam, rājya-lakṣmīṁ dharmiṣṭha ārya-vacasā yad agād araṇyam (SB 11.5.34). Caitanya Mahāprabhu was very, very well situated. He was born in a very respectable high brāhmaṇa family, Jagannātha Miśra, and mother's side, the Nīlāmbara Cakravartī, he was very respectable brāhmaṇa. And Caitanya Mahāprabhu's learning, nobody could excel Him, He was so learned scholar. And when He was sixteen years old, He defeated one of the most learned scholar of India, Keśava Bhāratī. So learning, family . . . And wife? Personally goddess of fortune, Lakṣmīpriyā and Viṣṇupriyā, most beautiful and young. Viṣṇupriyā was His second wife; so faithful, so beautiful, personally goddess of fortune, such wife. And mother, most affectionate. There is no comparison with Śacī-mātā. So this was . . . And influence? When He was twenty years old, He could, by His command, gather 100,000 people to protest against Kazi, He was so popular. So popularity, born in high family, having good wife and good mother, everything complete—still, He took sannyāsa. Therefore it is said, pūrvatamair mahadbhiḥ. Why? Now, just to show mercy to the fallen souls. Māyā-mṛgaṁ dayitayā (SB 11.5.34). Just to show mercy to the fallen souls. This is the meaning of sannyāsa. One must be very merciful. Vaiṣṇavas, they are merciful. All devotees of God, Vaiṣṇava, they are merciful. 
(750721 - Lecture Initiation Sannyasa - San Francisco)