Comment: Misuse by the user.

Yup. Cause aaaallll those users, they just went right out and got pills from the local grocery store.

Oh no! Wait! They were given prescriptions by uninformed, misinformed, ignorant, and willingly ignorant, mis-prescribing physicians.

Let's put the damn blame where it really belongs--on the "supply" end, which ended up creating a "demand" end.