Depression is a lot like the meaning to a Beatles song. Drugs are typically the answer.
Why do you say that drugs are the answer to it all?
Have you ever been depressed? What about drugs?
It is pretty ignorant to make a claim that depressed people should use drugs. It is pretty well known that drugs can be very harmful, and claiming that depressed people should simply use drugs is very dismissive of the magnitude of depression itself.
It's a figure of speech... People do use Beatles lyrics to describe depression.
You should not think that you need drugs to function though. Just because you are mentally ill does not mean that you should drug yourself.