I'm sorry to hear about the struggles this has put you through, but I might mention that it is not universal that diagnosed sufferers of ADHD are unable to engage with their interests. In fact often direct interests can be highly engaging, while things that need to be done but are not interesting are debilitatingly difficult (executive dysfunction).
As with ASD and neurodivergency at large, ADHD is a spectrum, with differing impacts for differing people.
As with ASD and neurodivergency at large, ADHD is a spectrum, with differing impacts for differing people.