With single parenting and cohabitation (when a couple shares a residence but not a marriage) becoming more acceptable in recent years, people may be less motivated to get married. In a recent survey, 39 percent of respondents answered “yes” when asked whether marriage is becoming obsolete (Pew Research Center 2010). The institution of marriage is likely to continue, but some previous patterns of marriage will become outdated as new patterns emerge. In this context, cohabitation contributes to the phenomenon of people getting married for the first time at a later age than was typical in earlier generations (Glezer 1991). Furthermore, marriage will continue to be delayed as more people place education and career ahead of “settling down.” One Partner or Many? People in the United States typically equate marriage with monogamy, when someone is married to only one person at a time. In many countries and cultures around the world, however, having one spouse is not the only form of accepted marriage, even if it is the most common. Polygamy, or being married to more than one person at a time, is accepted to varying degrees around the world, with most polygamous societies existing in northern Africa and east Asia (OECD 2019). Instances of polygamy are almost exclusively in the form of a man being married to more than one woman at the same time, rather than a woman being married to more than one man (Altman and Ginat 1996). While the majority of societies accept polygamy, the majority of people do not practice it. Even in the regions where it is most common, only an average of 11 percent of the population lives in arrangements that include more than one spouse (Kramer 2020). In these relationships, the husbands are often older, wealthy, high-status men (Altman and Ginat 1996). The average plural marriage involves no more than three wives. Negev Bedouin men in Israel, for example, typically have two wives, although it is acceptable to have up to four (Griver 2008). As urbanization increases in these cultures, polygamy is likely to decrease as a result of greater access to mass media, technology, and education (Altman and Ginat 1996). In the United States, polygamy is illegal. A recent Gallup poll showed that 21 percent of people believe polygamy is morally acceptable, which is a major increase since earlier versions of the same poll. But the poll also found that polygamy was among the least acceptable behaviors considered in the study; for example, polygamy was far less acceptable than consensual sex between teenagers, though it was more acceptable than a married person having an affair (Brenan 2020). The act of entering into marriage while still married to another person is referred to as bigamy and is considered a felony in most states.