It sounds like you do not have a clue as to what you are talking about. Depression is a complex topic. It is not just feeling bad or sad, or anything like that. It is living at the bottom of a pit with no way out.

As to your observations on diet... So, do you have any evidence linking the diet that you quote to depression? for me personally, I actually find it a lot easier to stay positive when I eat plenty of red meat.

SSRIs have their place. They are not for everyone, and are often overprescribed. However, they do work for some people, and not for others.