Before this, I never thought that an older married woman would see her widowed friend as a threat. I thought that after the fertile years, this type of defense was not common (thinking from an evolutionary perspective). Subsequently, this made me think that the need to preserve a mate was not just for reproductive purposes, but rather that marriage fulfills the need for a mate. Another interesting part of our discussion was related to the preference of inviting the mother more than the father to live with their children. I wondered why this was the case and came up with two possible explanations. First, typically, fathers in their younger years focus more on the financial stability of the household than on developing a rich, strong relationship with their children. Second, it is possible that mothers are more helpful to their adult children in terms of housekeeping and child care. These assumptions are based on the traditional family roles played by those who are today our grandparents.’