You're still trying to make sense of things that you have no control over and it's killing you. Unless you're the person actually in MLC or whatever, you're not going to get any answers that are going to satisfy you. That's why you need to concentrate on yourself.
MLC IS NOT a disease. There are no concrete behaviors that everyone going through it suffers. Some get an A, some buy a sports car, some totally change their profession and not all of them leave their spouses.
There is no magic bullet. You really need to stop asking "why" because you're never going to get a perfect answer. Many people going through MLC (especially those who don't get C), NEVER understand why. They think (for some reason) that life is beyond their control and that THEY were controlled by everything around them. It comes down to personal responsibility and having strength in yourself.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.