Now, from this we may take the lesson that in our fight with māyā we should not be in a position in which our strength, enthusiasm and senses will be unable to fight vigorously. Our Kṛṣṇa consciousness movement has actually declared war against the illusory energy, in which all the living entities are rotting in a false understanding of civilization. The soldiers in this Kṛṣṇa consciousness movement must always possess physical strength, enthusiasm and sensual power. To keep themselves fit, they must therefore place themselves in a normal condition of life. What constitutes a normal condition will not be the same for everyone, and therefore there are divisions of varṇāśrama—brāhmaṇa, kṣatriya, vaiśya, śūdra, brahmacarya, gṛhastha, vānaprastha and sannyāsa. Especially in this age, Kali-yuga, it is advised that no one take sannyāsa.
aśvamedhaṁ gavālambhaṁ
sannyāsaṁ pala-paitṛkam
devareṇa sutotpattiṁ
kalau pañca vivarjayet
[Cc. Ādi 17.164]
(Brahma-vaivarta Purāṇa)
From this we can underst