It's pretty irrating to support stigmatizing/banning a drug that millions of people use and get therapeutic effects from based on a few unrelated anecdotes.
My position is simply that there is underlying causes behind people's complaints. Stimulant-prescribing doctors would rather suppress the symptom than investigate.
Robert Whitaker's Anatomy of an Epidemic discusses amphetamines on pages 64, 219, 228-29,236, "See also Benzedrine; Ritalin". Ritalin is covered in more depth: case studies, as cause of juvenile bipolar disorder, hiding the evidence, risks/side-effects, and silencing dissent.
More information about this book can be found through the Mad In America link above; I directly linked to its information page in another comment.
People tend to like the stimulants. They tend to hate the sedatives. Some stimulant users end up being forcibly sedated with "anti-psychotics" (courtesy of a court-order), because they couldn't keep their stimulant use under control and became psychotic.