Long-duration relationships. We expect ties with our immediate family, and to a lesser extent with other kin, to extend throughout the lifetimes of the people involved. This expectation is by no means always fulfilled, as rising divorce rates and family break-ups indicate. Nevertheless, we still theoretically marry "until death do us part" and the social ideal is a lifetime relationship. Whether this is a proper or realistic expectation in a society of high transience is debatable. The fact remains, however, that family links are expected to be long term, if not lifelong, and considerable
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