Of course it's the case, stop being so damn ignorant. People like you are the reason that taking ADHD medication is so stigmatized, because you assume the default is to abuse.
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.
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".