One issue I can see with my H is very clear. H has learning differences, Dyslexia and Dysgraphia the most pronounced. Watching him read is literally painful because I see his eyes hit every...single...word... on the page. It has to be hard on him. His writing is very bad. Both of our children got smacked right between the eyes with the same issues, but both are very intelligent, as is H (fortunately, they missed on on some of the other issues H has).
When H was in High School, he did poorly in Spanish (if you cant read English, you're going to have trouble with a foreign language) and the teacher told him "It's OK, the world needs ditch diggers, too." Yes. She really did that. As if not being able to speak Spanish means you have no other option than to dig ditches. I saw the beginnings of MLC when D20 was 14 and started High School. D, however, is very smart and knows how to get the help she needs, and fight for what she deserves (extra time, for one). I showed her how, by fighting for her for years. She embraces all that she is, knows what her limitations are, and chooses to leverage her accommodations to make the best out of a non ideal situation. I think this is why the MLC didn't blossom until S17 hit high School.
When S17 started High School, he had a very hard time. S wanted to be like everyone else. He didn't want anyone to know he had any issues. But the Executive Function Disorder (inability to prioritize things properly) wreaked havoc on S the first year of high school. I think H started reliving High School Hell at that point. The following year, when D left for college, the realization that the kids were growing up hit him. That he was running out of time to do all the things he never did because he was too busy playing video games. Somehow, that was my fault. Go figure. I forced him to play video games instead of starting a business. Insert violin music here. And he HAD to start a business, because his dad started a business. And because if you work for yourself, no one can say you aren't good enough.
Bottom line, my H is reliving his hideous high school experience through S17, he's lost his identity as his version of what a father is because the kids are grown, he needed to start a business because he doesn't know who he is and needs to be who his father was, and needed to leave to force me to get a job so that I could support the kids in case the business didn't work out. He had already proven that the people who thought he'd never make it were wrong, but somehow that just didn't take hold in his psyche. That's my opinion, and I'm sticking to it.