I agree with you too bottleofbeer.
What stopped these two being 'normal 10 year old boys'. It starts with the nature or nurture debate doesn't it? What brought those two boys to the point that they would do this? Was it in them, or was their upbringing so appalling that it lead to this?
I watched a Horizon programme some time ago about what makes you evil. Scientists thought they could spot something common in the brain scans of murders. They went further to also identify a common gene. (This is from memory so don't shoot me if I haven't got it 100% right, it was on years ago!)
Anyway, it turned out that one of the scientists tested himself, and he had both common traits, yet he obviously wasn't a psychopath. His family weren't actually surprised that he had them. But the difference was he had had a very very happy childhood. They aso suggested that a lot of CEOs of big companies could also have the brain and the gene bits, using the traits sort of to the good.
The conclusion seemed to be, there were 3 elements - the brain make up, the gene, and the upbringing. Nature and nurture.
So that could explain how those two boys got there. And they were failed nurture wise. But how did one get rehabilitated (assuming he did) and one didn't? Is that the nature bit?
So that's the thing that I don't agree with you on bottleofbeer. I think we should care a lot about the choices Jon Venables makes as an adult. I think even if free he should be placed in some sort of close supervision situation, for an extended period. I think we should continually try to reverse the nurture part of his story. I think we could learn something that may help us as a society rehabilitate others who could be capable of this.