Most marriages are monogamous. Marriages are not a sacramental affair and are arranged by families, but usually on the request of one or the other of the potential marriage partners. Divorce is easy, informal, but infrequent after the arrival of children. Families tend to be nuclear and to live in their own compound, but many households (the really effective unit) are made up of extended families or compound families. This results in part from the normal cycle of family formation and dissolution rather than from a preference for larger than nuclear families. The strongest bond in the family is the mother-daughter relationship, which is lifelong. There is no strong domestic division of labor; men cook and tend babies, and women are barred only from the monkhood.