argues in The Better Angels of Our Nature (2011) that because the families of men in the West Bank and Gaza often cannot afford bride prices and that many potential brides end up in polygynous marriages, the financial compensation of an act of suicide terrorism can buy enough brides for a man's brothers to have children to make the self-sacrifice pay off in terms of kin selection and biological fitness (with Pinker also citing a famous quotation attributed to evolutionary biologist J. B. S. Haldane when Haldane quipped that he would not sacrifice his life for his brother but would for "two brothers or eight cousins"). Effects on women Inequality between husbands and wives is common in countries where polygyny is more frequently practiced because of limited education. In Africa polygyny was believed to be part of the way to build an empire. It was not until the post colonialism era in Africa that polygyny began to be viewed as unjust or taboo. According to Natali Exposito, "in a study of the Ngwa Igbo Clan in Nigeria identified five principal reasons for men to maintain more than one wife: because having more than one wife allows the Ngwa husband to (1) have the many children that he desires; (2) heighten his prestige and boost his ego among his peers; (3) enhance his status within the community; (4) ensure a sufficient availability of labor to perform the necessary farm work and the processing of commercial oil-palm produce; and (5) satisfy his sexual urges." Out of all of the reasons stated none are beneficial to the wives, but instead only beneficial to the husbands. In Egypt, feminists have fought for polygamy to be abolished, but it is viewed as a basic human right so the fight has been unsuccessful. In countries where polygyny is practiced less frequently, women have more equality in the marriage and are better able to communicate their opinions about family planning. Women participating in polygynous marriages share common marital problems with women in a monogamous marriage; however, there are issues uniquely related to polygyny which affects their overall life satisfaction and have severe implications for women's health. Women practicing polygyny are susceptible to sexually transmitted diseases, infertility, and mental health complications. Among the Logoli of Kenya, the fear of AIDS or becoming infected with the HIV virus has informed women's decisions about entering polygynous marriages. Some view polygyny