You are right JaYMan. But you must realize we are all products of our environment.
One who is raised by those who are themselves evil

will have a much greater chance of being the same way. It is not to say this is always true but I have friends in low places and the common thread to their existence was how and where they were raised and by whom.
On the flip side there are many evil people that come from families that are well off and live a comfortable life. Where did the evil come from that infected these unsuspecting youth?
Either from the parent's that put up a good public perception while they are practicing one, many or all of the seven deadly sins...or from their so called friends that have already experienced the dark side!
Bottom line, the chance of someone not being exposed to evil in this world today is about Zero. The chance of them becoming evil... unless they were raised in a home that constantly fostered an unwavering environment of Trust and Respect ... rests mainly in the hands of those THEY choose to Trust and Respect.
Like anything in life it always comes down to two choices... in this case Good vs. Evil .

And we all know the Good Guys don't always win, do they???