There are two common views of marriage, researcher and author Peter Jon Mitchell says. One is a more traditional or “institutional” view, and the other is the “soulmate” view, with the latter being the predominant one today.
The institutional view is a more “ancient way” of thinking of marriage, where partners “voluntarily constrain themselves” in a permanent union to pursue a shared purpose, he says, adding that this model often results in integration through parenthood, emotional intimacy, and economic cooperation.