TRIGGER WARNING
I'm a survivor of childhood SA at the hands of my F and others. None of these men have faced any prison time. That's the real problem, catching these people. And then they all too frequently get pathetic sentences. 
Would I want them dead? Well, my F is dead and I'm not free of the trauma, I still suffer from complex PTSD, as does my DSis and probably my DB as well (along with other MH issues). So the fact that he's dead isn't really closure at all. Would it be different if he had faced justice? I don't know.
The others are all dead, too, this all happened in the 1970s and 1980s. Apart from one, whom the police traced and built a case against him. The CPS decided that there wasn't enough evidence to take it to court. He was a stranger to us, though his accomplice had groomed us and my DM knew him and had been suspicious of him at the time. Sadly, because the one we knew was dead, they couldn't do anything about his accomplice. ID evidence wasn't sufficient, because it was from too long ago.
The police were convinced that he was their man, but that was the end of it. At least it will show up on his DBS records.
Would I want him dead? I don't know. I would want him in prison where he won't be able to hurt other children. It's a moot point, because, once again, there was no conviction. So yes, I'm angry, but not because I want them to face the death penalty.
The death penalty will never be right, because of the risk of an innocent person being executed. But quite apart from that, it won't take the pain away.
But the conviction rate is a disgrace, as is the sentencing.