You bloody fascists!
Seriously, have you ever spent any time talking to homeless people? I'm not saying they love the crap they're in, but many of them basically adjust tehir world view. It's one reason it's hard to get off the street (so I'm told). I don't see it myself, but WTF? You can't just kill people because their lives are crappy.
Now, PJ Harvey, on the other hand... her life is incredibly pampered but she won't stop banging on about how upset she is. I think the kindest thing would be to kill her. Because e can't simply expend the resources to make her life better, as we could with other unfortunates.