Have you ever had a job that you loved and were very good at? Where you made great money and had great support from management? BUT... the job was very demanding, stressful and cut into your personal and family time SO much so that you just burned out on it and were not passionate about doing it anymore? Not to mention the huge disappointment of almost reaching the pinnacle of your profession only to come up short not once, but multiple times?
I totally get it and in my own VERY small way have experienced it firsthand.
The good thing for Carl and his family is that he is in a financial position to be able to make that decision, walk away and embrace a new challenge that will hopefully rekindle that passion. Many people are not fortunate enough to be able to do that... even though they wish they could.