I think that in most cases, medication should be carefully considered on a case-by-case basis. I know that often schools will press for an ADHD diagnosis to medicate unruly children, and of course the more people are popping pills, the more money the pharmaceutical companies make, but I also know several people who simply cannot function without Ritalin or Vyvanase.
One of my friends in particular stands out: when he is medicated he's quiet, focused and a little despondent, but when he is un-medicated you can hardly talk to him, because every sentence is a new conversation and sometimes he'll just get up and leave you hanging and go running around because he can't keep track of even a three or four minute exchange.
He admits that he couldn't have finished school or gotten into college without a really high dose of Aderall.
Adderal, Ritalin and Vyvanase don't concern me all that much, because (apart form stunted growth) there don't seem to be huge developmental side-effects and most patients seem pretty functional.
What really scares me are children who are put on SSRI's or benzos for anxiety and depression, like I was. I got off them pretty fast, but I have seen kids that I work with who come into camp with absolutely no affect because they've had their emotions surgically removed by the drugs. There's no sense of childhood wonder or joy, or really anything.
If an adult chooses to take those for depression, that's fine, they can do that, but parents who do that to their children are robbing them of an integral experience for emotional development that their children will never get a shot at again.