Circumcision is more widespread and prevalent than I thought. According to Wikepedia:
In some cultures, males must be circumcised shortly after birth, during childhood, or around puberty as part of a rite of passage. Circumcision is commonly practised in the Jewish and Islamic faiths.
Jewish law states that circumcision is a mitzva aseh ("positive commandment" to perform an act) and is obligatory for Jewish-born males and for non-circumcised Jewish male converts. It is only postponed or abrogated in the case of threat to the life or health of the child.[50] It is usually performed by a mohel on the eighth day after birth in a ceremony called a Brit milah (or Bris milah, colloquially simply bris), which means "Covenant of circumcision" in Hebrew. It is considered of such importance that in some Orthodox communities the body of an uncircumcised Jewish male will sometimes be circumcised before burial.[174] Although 19th centuryReform leaders described it as "barbaric", the practice of circumcision "remained a central rite"[175] and the Union for Reform Judaism has, since 1984, trained and certified over 300 practicing mohels under its "Berit Mila Program".[176]Humanistic Judaism argues that "circumcision is not required for Jewish identity."[177]
In Islam, circumcision is mentioned in some hadith (it is referred as Khitan), but not in the Qur'an. Some Fiqh scholars state that circumcision is recommended (Sunnah); others that it is obligatory.[178] Some have quoted the hadith to argue that the requirement of circumcision is based on the covenant withAbraham.[179] While endorsing circumcision for males, Islamic scholars note that it is not a requirement for converting to Islam.[180]
The Roman Catholic Church formally condemned the ritual observance of circumcision and ordered against its practice in the Ecumenical Council of Basel-Florence in 1442.[181] The Church presently maintains a neutral stance on circumcision as a medical practice.[182]
Circumcision is customary among the Coptic, Ethiopian, and Eritrean Orthodox Churches, and also some other African churches.[8] Some Christian churches in South Africa oppose circumcision, viewing it as a pagan ritual, while others, including the Nomiya church in Kenya,[8][183] require circumcision for membership. Some Christian churches celebrate theCircumcision of Christ.[184][185] The vast majority of Christians do not practise circumcision as a religious requirement.
Circumcision in South Korea is largely the result of American cultural and military influence following the Korean War. In West Africa infant circumcision may have had tribal significance as a rite of passage or otherwise in the past; today in some non-Muslim Nigerian societies it is medicalised and is simply a cultural norm.[186] Circumcision is part of initiation rites in some African, Pacific Islander, and Australian aboriginal traditions in areas such as Arnhem Land,[187] where the practice was introduced by Makassan traders from Sulawesi in the Indonesian Archipelago.[188] Circumcision ceremonies among certain Australian aboriginal societies are noted for their painful nature: subincision is practised amongst some aboriginal peoples in the Western Desert.[189]
In the Pacific, circumcision or superincision is nearly universal among the Melanesians of Fiji and Vanuatu,[190] while participation in the traditional land diving on Pentecost Island is reserved for those who have been circumcised.[191] Circumcision or superincision is also commonly practiced in the Polynesian islands of Samoa, Tonga, Niue, and Tikopia, where the custom is recorded as a pre-Christian/colonial practice. In Samoa it is accompanied by a celebration.
Among some West African groups, such as the Dogon and Dowayo, circumcision is taken to represent a removal of "feminine" aspects of the male, turning boys into fully masculine males.[192] Among the Urhobo of southern Nigeria it is symbolic of a boy entering into manhood. The ritual expression, Omo te Oshare ("the boy is now man"), constitutes a rite of passage from one age set to another.[193] For Nilotic peoples, such as the Kalenjin and Maasai, circumcision is a rite of passage observed collectively by a number of boys every few years, and boys circumcised at the same time are taken to be members of a single age set.[194]