Child. I'm 33 for FFS

But yeah i don't have a child of my own.
So i understand how that might mean i see things from a different aspect to those with children in certain cases.
I do agree with a lot of what Zed is saying here, good decent parenting has a big influence to raising a good decent child, and bad parenting a big influence on raising a bad child.
Its just the extent to which you can "blame" a parent when a child becomes a murderer that we differ from. There's a bit difference between that and a child not having good manners for instance.
I believe from what ive read the first 6 months or so in a childs life are very important,for exapmle if child feels neglected at that young age it can have a negative effect on it which can cause serious problems such as those seen in sociopaths. All because the father was out working and the mother had 2 other kids to look after.
Doesn't make them bad parents though.
Sure you can look back in hindsight and look at factors which might have made a child grow up to be a killer. But its impossible to see anything as that child is growing up and say "yes, that child WILL become a murderer later on in life".
Guess what i'm trying to say is that you can say blame the parents for someone being a kilelr, but you cannot point to anything which actually proves that, you cannot say yes thats exactly what they did wrong which made their child a murderer.
There are outside influences as well. Other children, what they see and what they read, very little things which can seem insignificant at the time and to everyone else can have devastating affects on people.