No baby is 'born evil' and skills like empathy or not innate (we are programmed to be able to learn it, but adults have to model and teach it in a safe secure home for it to be learned properly)...but babies are not blank slates either. Firstly because like it or not, genes do have a role to play in your innate self, yes it's open to debate how much, but they do indisputably have at least a little influence. Secondly and very importantly, development in utero (especially brain development) can be strongly influenced by the womb environment. For instance, a baby exposed to large amounts of alcohol in utero can get irreversible brain damage, some illegal drugs are linked to sensory issues, and ADHD in childhood etc. You can see babies with different behaviour patterns and fear when they have been exposed to constant yelling and high stress (ie. large amounts of stress hormone) in utero.
Anyway...I came on to say what others have said, that it won't have been a decision taken lightly. I hope that since he has been parolled he is able and willing to go on to live a trouble and crime free life but am not hopeful :( I agree that he is probably self destructing, and even if not, the damage done in childhood is the kind that you often need not only serious therapy to fix, but the insight and the willpower and willingness to change