Life throws one around. Life fluctuates. At one point, it can give you great joy, while at the next stop it may rob you of everything. Disease, ill fortune and calamity can fall upon any one of us.
If one's premise for relationship is to stay together until the bitter end, face life as one unit and gain something invaluable and imperishable from it, you wan't to protect it. I didn't mean the control as in exercising control over other people. I meant it as the ability of the couple to exercise control together over their destiny, surpassing the external forces. And, if there are two people, there is lesser likelihood for schism or fracturing.
In my opinion, that is.