Why does Jonas' society match spouses instead of letting people choose their spouses? What is your opinion of this practice?

Jonas' society controls every aspect of their lives in their desire for sameness. Families are ordered, a husband and wife... and two children, a boy and a girl. Parents are meant to raise the children, not to have the children. When the children grow up, the marriage is dissolved. It's like a working parentship in which the marriage is based upon compatability and companionship. They don't have to be in love, they simply have to want children and fit as a couple. Love, in fact, is an unknown entity. After couples are matched, they have three years to decide if they want to be together before applying to raise a child.