We've gotta change the marriage vows.
"I _____ take you ______ to be my lawful wedded ______, to have and to hold from this day forward, for better for worse, for richer for poorer, in sickness and in health, until we are parted by death. This is my solemn vow."
"I vow that I'll stay until I don't."
It'll shorten the ceremonies.
Actually, my wife attended a wedding where a friend of hers (major atheist) and her guy (major dick...and atheist) were getting married by a justice-of-the-peace and their vows included "until our love ends."
Talk about leaving yourself an easy out.