I'm not sure that Korg meant that all cases somebody should "suck it up". I have seen profound depression beyond things which people can talk or think their way out of, almost certainly due to chemical imbalances. Medication for them is probably the only way to even begin to deal with it meaningfully.
I'd struggled with depression from a young age, probably partially due to a predisposition but increased due to my choices and environment. I also tried to kill myself, easily the worst mistake of my life or that I think I will ever make. To shrug one's pain and cause others more is just wrong. In the end, I finally knew rather than paid lip-service to or glanced at as stupidity, that dwelling on things serves no purpose. The feelings can still come, one can recognize them and move forward. Moving forward toward a solution is the only sane thing to do. The experiences served to solidify and work out my world view and as I see it purpose in life: actively working towards the change I want to see, in a way much more dedicated than I would have w/o experiencing the pain caused by the terrible state of affairs I saw the world in. Yet, we are where we are because people before us worked through hardship and the destruction of things they worked towards; what we have is what has survived. We owe it to them, and those like us in the future, to do what we can. To me, ignoring the problems was not an option, but I let the environment of pervasive uncaring affect me too much. This is certainly not to say that one shouldn't seek help. Frankly, this idea that everybody can take care of their lives by themselves, at all times, w/o anybody else is just silly. The biggest advantage that humanity has is to work together and create and do more than they would be able to alone. People, through their experiences or predispositions, may be in a better position to help others and may need, or at least benefit from, help themselves in other areas.
Medication has its place when it is a long-term problem. Relying on it to fix everything is not going to work. Therapy combined with medication work better than either of the two alone... which brings me to the placebo effect. It obviously works, in many more situations than any given drug. Understanding why it works seems like the one thing that would best benefit people in general. Alas, there's no money in it, and thus no research (science has gone crazy, something I want to address in another thread later on). In our time, people have truly been obsessed with money more than in any other time in history.
Finally, one who has experienced depression will be better able to help others. This is like how psychiatrists/therapists took LSD and other hallucinogens to help them better understand what a schizophrenic is going through (not that I would recommend taking these especially w/o some wisdom and control previously learned). Through an understanding of pain I feel that I have learned how it can affect people and how to cope better with it, and thus help others. These I think are the things that can be sort of blessings in disguise. If it is very profound and one is suicidal, medication can play a very important role in at least keeping things from getting worse. Yet, that will not make the problems go away, but provide an imperfect fix for it; ie in many cases it is treating the symptom but not the problem (I'm definitely not saying that everyone can fix themselves w/o it). There is much more to be done to provide a lasting solution, and relying solely on medication is not going to work in the long run.