I thought the vow was, "In sickness and in health." Evidently, Pat Robertson disagrees. Yet again we find horrible, unbiblical, ungodly advice from a man that people look to as a Christian authority.
I would hope that if I "lost my mind" (whether I was young or old), my husband would love me enough to stick by my side, even if I couldn't even remember his name. It is godly love that goes the extra mile.