I was struggling how to answer in terms of how I felt on the subject until I read Dazeofdolphins' post. That nailed it.

My reaction, of course, upon hearing someone has ended their life isn't "Wow how selfish." It's sorrow. I can't imagine the state of mind...the pure pain, I suppose, someone has to be in to do something like that. At the same time, I am horribly sorry for the family and friends, who'll spend the rest of their lives wondering "Why did ____ do it?" or "Why didn't I see this?" or "Could I have done something?"

To be fair though, I have not been in that sort of situation. I have never considered ending my own life, and my closest brush with suicide was a neighbor at my stepgrandparent's house who shot himself, and then I was too young to understand. Thus, I can only offer my own opinion, and hope I don't come across as insensitive with more knowledge than I on the subject or offend.