Very true words Naci. (welcome btw..)
People who are clinically depressed are often not even able to identify this fact... so seeking help is often done by having others intervene on their behalf... it is a terrible situation, with much stigma still associated with it, complicating the process even further. If one has ever known someone who has suffered from this debilitating health issue, one would quickly see that this is not something one 'chooses'. Living with a complete loss of interest in all things that once brought joy or fulfillment makes for a very bleak existence, particularly if the sufferer is being judged by those who do not understand the reality of depression.
If anyone reading this knows someone who just doesn't seem themselves, and it's been going on for any length of time, I would urge them to reach out and encourage that person to seek medical assistance. People with depression can function for great lengths of time with few outward symptoms that would be apparent - gradual withdrawal from friends, family, social activity can take awhile to become noticible - until it is too late, or the person has completely isolated themselves in their world of pain.
What I'd like everyone to know is that this is a treatable condition.... people can and do come back to fully functioning lives with help. This is also much more common that most people realize. Chances are that someone you know, work with or socialize with - maybe even a fmaily member - is being treated for depression and because the treatment is often so successful, you would never even know.