Scenario A: She pulls the tube, five years later she meets someone new and starts a new family.
Scenario B: The courts don't let her pull the tube. My body stays alive for decades. Now when she meets someone new five years later it is called adultery. But I don't want my wife to put her life on hold for decades while she fights a legal battle.
You'd understand. Besides, if she still has love for you then you'd probably come out ahead because she and her new hubby would take care of you.