I freely admitted that I don't understand it. Yet, your actions have consequences which effect other people regardless of what happens to be going on inside your head. Maybe someone who has been tormented by voices in their head for years can't be blamed for killing 5 people at a park on a Sunday afternoon, but that doesn't mean it should be considered acceptable. The fact is any culture which considers suicide a socially acceptable way to deal with depression has more suicide than other cultures. If you disagree with that, you should look into the issue a little more. You don't have to like it, but its true regardless of how that makes you feel.
Yes, because killing people is totally an appropriate analogue to suffering with severe depression. Nowhere did I say that suicide is, or should be, socially acceptable. My point is that people who don't suffer from it have no idea how it feels, yet continually, as you've done, make assertions that convey a superior understanding. My only response is to look at the messages from both his wife and daughter. Nowhere do you see them claiming selfishness, just profound sadness. To me that shows a deeper understanding of the subject at hand.