daftpunk, you seem to have several opinions that differ from TheSuburbanDryad's.
Firstly you have the opinion that ADHD is "a made up condition".
Then you have the opinion that, actually, in 1% of cases it isn't a made-up condition.
Then you apparently don't have either of those opinions any more, because all you are trying to say is that maybe there are alternative ways to treat children's behaviour without giving them drugs.
And these opinions are based on -- what? You've referenced the son of your "very good friend" (this would be the sort of "very good" friend who you think drugs her children because she fancies an easy life?) but nothing else.
I don't have a child with ADHD. I do have a very lively and boisterous DS who would be a complete nightmare if he didn't get lots of physical exercise -- the sort who really really needs to climb trees or run on beaches or whatever. But that's a very different thing from a child with ADHD. DS can concentrate when he wants (and can actually concentrate better than most of his peers, if he puts his mind to it); a child with ADHD can't (to over-simplify).
I suspect it is over-diagnosed, and drugs over-prescribed, in the US, where everything seems to be medicalised. Parents tend to have to fight for a diagnosis for their SN children in the UK even when there's a clear problem so I'd be surprised if that were such an issue here, although Peachy (as always) makes some very good points.