Your story is very interesting. Before I get philosophical about it though I would like to point out that I spotted three tragedies and three appalling things.
Tragedy 1: The death of a mother.
Tragedy 2: A son betrayed by his father and losing his mother
Tragedy 3: A young man, 19 years old who now will live the rest of his life behind bars
Appalling 1: $200 dollars for a life
Appalling 2: A man who values child support money over any human especially over the mother of his son, and of course his son as well.
Appalling 3: Other people with evidence of the crime did not come forward to aid police until it was forced upon them by other influences.
This is not just one man you don't know, this is a whole cross section.
Now let me point out some facts that I feel are pertinent to your question. Most mass murderers have been described and polite, shy, and gentle. They are two people within one body. Child molesters are most often friendly to children, gentle with them, and attract them through helping them with problems they are dealing with. That is of couse before they become the over riding problem the child will deal with for the rest of their life.
However, without outside influence the inner character will normally come out with too close an association (which is why both of these types of animals tend to be loners). You can get to know someone fairly well through time. However, if there is little true intimacy (and I don't mean physical) then there is little true learning. In the end, though, I must agree with most of the posters here, If I don't want you to you will never really get to know me.
This is why it is so important that we are careful. As a college adjunct professor I make it a rule that I will never be alone with a student. They don't know me well enough and I don't know them, my reputation is on the line and I protect that. When I taught Sunday School our Church had a rule that there would always be two adults in a room with the children. I think that is brilliant. Children need to be protected. When my son was growing up he tried to become a baby sitter and few people would hire him. Although he was upset I had to admit that I would not hire a teenaged boy (or even a young adult) to babysit if I had younger children. Why? Because the percentage chance of harm happening to my child increases dramatically with a male babysitter over a female (BTW I am male and I did babysit as a teenager). It is my duty to protect my children as well as I can. This does not guarantee anything because child abuse by babysitters etc. knows no gender boundary.
I do believe age can bring some discernment. I know that I pick a far more conservative set of friends now than I did in my teenage years. Still at least one of those friends has had trouble with the law and faced sex related charges. Even now I can easily wonder what may happen with others that I consider "sane and normal".
One last word though if I may. While I cannot tell for sure whether someone is a saint or a monster. While I may not know some of the dark secrets of those I meet. I also am not willing to become a hermit and close myself off from humanity. I am not willing to become so distrustful that I will trust no one. I will protect myself and my reputation. I will try to protect those in my charge. I will not let fear of the possible ruin my life.
Sincerely
