You are just displaying your ignorance here. Amphetamines are used in medications prescribed for narcolepsy (i.e. unwanted/inappropriate sleepiness), ADHD and obesity.
If you look at this and think of street meth, that's your own problem.
Regarding your comments in this thread (the worst of them are currently "dead") and in case you decide to keep posting on HN, you should take a look at the guidelines: https://news.ycombinator.com/newsguidelines.html
The guidelines seem very reasonable and beneficial for the discussions, here are some excerpts:
> Be kind. Don't be snarky. Have curious conversation; don't cross-examine. Please don't fulminate. Please don't sneer, including at the rest of the community.
> Comments should get more thoughtful and substantive, not less, as a topic gets more divisive.
> When disagreeing, please reply to the argument instead of calling names. "That is idiotic; 1 + 1 is 2, not 3" can be shortened to "1 + 1 is 2, not 3."
BTW, I don't claim to follow the guidelines perfectly all the time, the reason I'm writing this comment is basically because I would have preferred if you managed to get your point across better.
If your kids asked you that, I hope you'd give a reasonable answer about these being prescribed medications for narcolepsy and ADHD, that much improve the quality of life for people afflicted with these conditions. Rather than ignorant shit like "you don't ever need to take those pills".
If you look at this and think of street meth, that's your own problem.