Wait on. There are a few things that need to be considered and remembered here. Firstly, gone are the days where most doctors were working in a solo practice (there are still some around) nowadays, most doctors work at medical centres owned by businesspeople and they are under pressure to have ten-minute appointments (15 at maximum). Secondly, some medications can be used for more than one ailment. For example, propranolol is mainly used to treat high blood pressure, but it can be used to control an essential tremor or to manage migraines. Some antidepressants can be used at a lower dose than typically used for depression to manage chronic pain. If you went to the doctor and said that you couldn't sleep since your cat died, they might prescribe you a mild sedative for a couple of days and on an as needed basis, as well as suggesting you have a warm drink and some other tactics prior to going to bed, they won't just prescribe antidepressants at the drop of a hat. Most doctors will do some bloodwork to see if there's an organic cause for depression/low mood and try to treat that. And most doctors will prescribe lifestyle changes as well as antidepressants. But telling a patient with depression that they need to have goals and can be dangerous especially if their goals are not realistic, and also, a doctor who knows what to look for would, if a patient went to them and said, "I'm feeling really depressed. This has happened, that has happened," and the next week, they're tripping the light fantastic, be worried.