Walking away is better that is the truth, but they are people who believe in everything they do, it must be summarize with a fight.
What I mean to say is that, they do not accept to leave, as it will make them to feel like a loser, the deal is, they believed if they are going to leave, it does not have to be so easy but with a fight.
People do thing's base on how they feels, and how they want their life to be.
I still understand that with experience, it helps us understand how to address some situation's, yet, not everybody learn from experience.