Life is a cycle of defining moments from birth till death, each moment has its own memories, the 16 stages in life are celebrated with pujas known as the Solasanskar in the karmakand. The Vedas and the Purans has prescribed the rituals and the rights for these different stages in a human life. The most popular of the Holly books the Bhagwat Geeta describes Kramakand karmayog, Rajyog and Bhaktiyog
It is unfortunate many of the ancient philosophy and rituals get distorted in 21st.century by house wife tales and even worse by the present day gurus and somewhat sophisticated appearing disciplines such as the Bhramakumaries the B.K. who while extract the essence of Raj yog from the Bhagwat geeta and conduct funeral services without chhatspindi Sardh or the last rights the rites of the deceased no pind sanyojan no sardh kariya and advocate to feed every one without the karmkand , well no one should eat anything at their home in these circumstances as they are in Shutak.
Shree Sanatan Dharma, the 16 stages of life, losses it's very purpose when a person over 12-year-old, the Batuk, vows for celibacy to gain education, at the Yagnopavit , Janeu, Upanay " the sacred thread ceremony, at his wedding ; while ; " at the age of 13 puberty sets in . " (ref: google search).