Why on earth would you sign anything or pledge anything that you cannot possibly GUARANTEE would last until you die? How do you know what will happen in your life that will change you? Oaths and pledges are worthless. You don't need to be married (an oath/pledge) to remain faithful. Everyone knows that. A piece of paper is so much ground up tree. That's all it is or ever will be. It means nothing if the people involved are liars or wanton promiscuous LIAR dingbats.