People addicted to householder life wonder how one can give up the enjoyment of grhastha life, which is a concession for sex enjoyment, simply to become a mendicant in Krsna consciousness. They do not know that the householder’s concession for sex life cannot be regulated unless one accepts the life of a mendicant. The Vedic civilization therefore enjoins that at the end of one’s fiftieth year one must give up household life. This is compulsory. However, because modern civilization is misled, householders want to remain in family life until death, and therefore they are suffering. In such cases, the disciples of Narada Muni advise all the members of the younger generation to join the Krsna consciousness movement immediately. There is nothing wrong in this.

Srila Prabhupada, SB 6.5.36, ppt.