Nope. Leaving is actually always easy. You also NEVER know what comes next. Even staying and working with a flawed partner, who may not even realise how controlling their behaviour is, is a tougher choice, and not an always wrong choice. You seem strongly invested in narratives of irredeemable extreme narcissistic personality disorders, which are very rare, and even as a disorder there are people on the milder ends of the spectrum who can be helped not to be so controlling and steered away from manipulative behaviours. Sacrificing absolutely everyone's perfectly navigable relationships just because there are some people some people out there that are psychopaths is too severe a point of view to count as an LPT.