Being a father doesn't make a disease go away. Being a father means that you don't put yourself in a position that you can harm your children. It means that you don't give yourself the option to get drugs or alcohol or card games or whatever addiction. It means that if you are succumbing to the stress of your career, you retire or take an extended vacation. Particularly when you are, I presume, fabulously wealthy and can just check out of regular life for a while. I know he tried that in rehab in 2013, surely he had the ability to perceive he was in a time of weakness and could have taken a step back from his career, though I know he was not at the end of his role in the hunger games.