We don't know shit about what causes depression.

Hell of a lot more than we used to.

But I really don't think we should do away with talk therapy, and I'm not a fan of popping pills to fix imbalances that can be easily managed with healthy lifestyle decisions.

Are you not much of a fan of insulin shots, then?

Your post fits into my point. We've got to stop thinking of these things as mental 'imbalances'. There's no such thing. It's all physical, and there isn't a reason in the world why we can't design drugs that can help treat depression. Talking to people is great ... if they're sad. It'll help. But talking won't cure an actual physical disease, which is what "depression" is (there are better names for the phenomenon that have been come up with in the last ~10 years but offhand I can't think of them).

I am as worried about the trend of over-dosing (especially children) as anyone, but that's a skepticism I selectively apply when it fits the facts. The facts appear to be that "depression" is a physical disease with physical symptoms that can be alleviated. The brain is an organ, as mysterious as its inner workings may yet be.