I was diagnosed with ADHD at a young age, and my school counselors were pushing for me to get medicated due to the sheer amount of fights I was getting into. Parents firmly refused, and beat the shit out of me to get me into check. After getting into a fight my second day of middle school and being threatened with expulsion, I got the mother of all beatings, and I finally shaped the fuck up. No more fights, no more ignoring teachers, and fast forward to now, I can conduct myself appropriately without any meds needed, and exercise frequently to help with my high energy levels.
ADHD is a "diagnosis" that is given when someone exhibits enough symptoms with enough severity. It's like how we classify people as obese if they have a certain body fat percentage, or buff if they have enough muscle. There are a few extreme cases where medicating conservatively can help, but the vast majority of the time it's a total cop out and an admission of weakness.