Not everyone gets addicted. I think they should have a central database, at least for drugstores/legitimate pharmacies in a wide area so they can catch multiple scripts of regulated meds.

Sometimes things get ridiculous, like when my husband went to get an eye dropper for me to put medicine in my ear and the pharmacist asked him, before he would sell it to him (it was behind the counter) why he was buying it; like a drug addict would tell him the truth? My 60-something year old husband was caught totally unaware and stammered, "Because my wife told me to"