I don't really think it's fair to call him an asshole for what he did. He can't exactly gift his life to someone else, but someone's life may have been improved or even saved by the organs that could be used from him which may not have been the case down the road as he got older.He threw away a gift that others would kill for. He's an asshole.
My life isn't all that important to me. I've wanted to end it since I was 10 years old, but I stopped myself because I love my parents and I didn't want to hurt them. Some years from now when they're gone, I don't really see a reason for me to stick around so I'll probably be calling it a day after that. That could change of course, but for right now that's my plan. Others might want to keep living as long as they can to see all the possibilities that are ahead, but it really just doesn't interest me. I should be able to have that view and make that choice for myself without feeling bad or guilty about it.
Everyone's views on this topic are going to be different and I don't think that anything anyone says is really going to convince anyone to change their mind on it. If anything, this guy did succeed in getting people to talk about a difficult subject, which is good. We aren't given a choice as to whether or not we want to be born and I don't feel that anyone should feel forced to keep on living if they don't want to. Choosing death also shouldn't immediately label you as being sick or unfit to make rational decisions. Of course, if someone feels it's their only option that's something else entirely.
There's no set of conditions to be met or a line to be crossed before this kind of suicide acceptable or unacceptable. It's just another choice with its own set of consequences that's going to affect everyone differently. Not sure what point if any I was trying to make with all that but meh.