No, I think psychology has medicalized a range of normal emotions and behaviors, like sadness and anger for example, and that there is not necessarily any such disease as depression. I know that's not PC and some may find that shocking, but it's pretty plausible when you look at the history of psychology.
Since I've already crossed the PC/shocking line... It's amazing the similarities between SSRI's and lobotomy. The mechanism of action isn't fully understood, yet some people are improved, and some people are made worse, and everyone has side effects. It was considered a breakthrough at first, then followed by controversy as people began to question the mechanism of action, the ethics of forced surgery (forced drugging) etc.