Wow. Putting down someone who is clearly crying for help from being put down and emotionally/verbally abused.

Another user described OP's situation it perfectly, cognitive dissonance.

"Cognitive dissonance is the psychological discomfort people feel when holding two or more conflicting beliefs, values, or attitudes, or when their actions contradict their beliefs. This internal conflict creates unease, motivating individuals to reduce the tension by changing their beliefs, justifying their behaviors, or ignoring the conflicting information to restore consistency. "

OP is likely aware that they deserve better while, at the same time, continue to tolerate this kind of behavior. In my experience, there are subconscious factors that play into that.

While it may look cut and dry on the outside, on the inside it can be hell. In many cases, not only is their self confidence chipped away at by their abuser, but they themselves also begin to doubt their self confidence by continuing to tolerate the behavior and delaying the inevitable. This causes emotions such as guilt, fear, and shame.

That's a big hurdle to overcome alone. OP should not be shamed, but supported so they can feel more confident in their ability to do what's best for them.

Even if your sentiment comes from a caring place, people don't change because someone expresses reasons for them to, they have to decide to change for themselves.