Very sad day indeed. RIP.
Having directly known 5 people that have committed suicide the way I rationalise it is by saying depression is no different to cancer. Some people get cured, some don't, sadly this is the result when they don't get the treatment they need. It is a disease/illness of the brain and very difficult to diagnose and treat. Until more people start to think of it this way I don't think things will change. (sorry, not wanting to start a suicide thread!)