1. People take it as a study drug, without prescription.
2. There may be over medication. Doctors will sometimes feel pushed to prescribe (as is known to happen with antibiotics)
3. At an individual level that is true, but you may need it because of your society and environment. Both ADHD rates and treatment varies between countries (even between regions and states within countries) and has varied a lot over time, which implies some external factor affects it.
I think untreated attention issues (if not the rather narrowly defined condition labeled "ADHD") are rather widespread. And society doesn't help, just look at the checklist of things you need to do on an ongoing basis to just keep a vehicle running for transport in the US, which pretty much everybody outside a city needs, and even many city dwellers elect to procure as well.
1 out of every 5 Ivy League students is prescribed stimulants.
I think it’s time we stop pretending like prescriptions magically mean the substance isn’t abused or is truly needed.
From the third paragraph of the article:
"Researchers analyzed responses from an online questionnaire of more than 600 Ivy League sophomores, juniors and seniors who were not diagnosed with ADHD — attention deficit/hyperactivity disorder — and therefore did not have a prescription for the medication. Writing essays and studying for an exam cause the most angst for students — of those who used stimulants, 69 percent said they used them to stay focused while writing and 66 percent said they used the drugs to help study."