One must ask why this is so. The answer is because Sikhs are Sikhs and NOT Hindus . As such, Sikhs have no place in India. They are the followers their Ten masters, Guru Nanak Sahib to Guru Gobind Singh ji . Their eternal authority is Guru Granth Sahib , which is the compilation of their Gurus' teachings.
Initiation is the part of a Sikh's life.
Sikhs do not believe in other faiths, but they respect all faiths. Their gods are numerous, like Rama, Krishna, monkey God Hanuman, Shiva, Vishnu, Kali, Durga, Mother Sheranwali, Bhawani, to name a few. They also worship rats, monkeys, snakes, scorpians, dogs, plants, etc . All these activities are performed according to Gurmat. They believe in Mundan or ceremonial shaving, which is an important element of the rites of death.