My sister, who was a special agent with the OSI found out her husband, a former special agent and now private detective, was writing long rambling, vaguely threatening letters to the President. She found this out when she headed the air-force security detachment for Roslyn Carter. The Secret Service gave her copies. Her husband had taken up drinking and developed a number of other problems she could not deal with. (According to him, all the problems were hers.) So, she divorced, at which point his elderly father flew up to have him involuntarily committed as he was so crazy he was now dangerous.
Not all divorce is evil. Not everybody can handle a crazy spouse. Nor, should they be expected to.