As a parent of a child with ADHD I can say that you don't know what you are talking about. I saw first hand myself that there was something different about my son and his inability to concentrate and how the medication has helped him and help him change for someone just barely getting his work done to an A student. There is clearly something different about the way his brain works.
I don't doubt your results one bit. The question is - at what cost are they being achieved? I could drop a couple of Adderalls and do paint correction from 5am to midnight without a brake. I could turn around the most trashed paint into a show stopper in record breaking time. Awesome results, right? .... Right now, I could only polish paint for maybe 2 hours until I needed a break or became bored...
In the long run - these drugs are quite bad. They are habit forming, dangerous, bad for your health, and IMHO basically a crutch. I'm glad they are working out for you now - but now isn't forever.
Fast forward to 20 years in the future. The child has now had 20 years worth of amphetamines overtaxing their adrenal, circulatory, and cardiac systems. Since these medication induce tolerance - higher and higher doses of amphetamines are now required to get the desired effect. Without their amphetamine drugs, the person becomes a human puddle - unable and unwilling to to complete the most basic human tasks.
If you think a child magically reaches a point where they just will stop taking this medications and "catch up" - you are woefully mistaken.
Most people that take these drugs for many years are taking way beyond what is considered safe dosages. Drs. continue to up the dose due to tolerance - as the person just can not function without the medication.
Then, the child eventually grows up into an adult. They are finding the workplace to be even more competitive and stressful than school. Additional drugs are added, doses are increased... Doses are so high now - tranquilizers are now required to sleep or sometimes even sit still. The person becomes "twitchy"... Their teeth start going bad way too young.
They have been taking antidepressants for at least the past 10 years to even out the ups and downs of the amphetamines. At this point, most Drs will add a mood stabilizer or an antipsychotic. Actually, MANY children are taking antipsychotic medication off the bat - and the parents don't even know it as such.
Somehow, the human race has existed (and often thrived) for thousands of years without giving our children amphetamines. I dunno. I believe their are other ways to motivate children to "concentrate" or to do well in school - besides drugging them.
I'm telling you this as a person that sees this every day as fairly hands on and clinical type pharmacist - not as someone who reads it on some website. MDs and big pharmaceuticals have many parents believing this stuff is acceptable and legit - all in the name of maximizing profits.
I'm just as bad - I hand it out every day for the dollar. Honestly - it's profitable... It's my opinion that it's the parents jobs to do their own research and make their own decisions. I'm just giving you my honest opinion based on my education and professional experience here. Take it as you may.
To say "I clearly don't know what o am talking about" is a mistake... I don't know crap about a lot of things - stuff like financial planning, building houses, and how to prepare ceviche. But, I do know quite about about medications and cars.