>Why can't I just chat with an AI bot and get my prescription?
Because people have decided that whatever drug you are taking shouldn't be taken without a doctor's oversight. If you have a problem with that conclusion, the response should be lobbying to get that drug reclassified as safe for over-the-counter sale, not completely removing the doctor's oversight from the prescription process. Ironically, your proposal here is using AI to treat the symptom that frustrates you without any attempt to diagnose or treat the actual root cause of the problem.