This is the issue, right? There are some men who don't think they should have to support their own children because, in doing so, a woman they no longer have sex with will receive money from them.
I've heard men say, "I send the check and some of the money goes to things for her." I've heard men say that women should have to keep receipts and itemize where every cent goes so they know she isn't getting any groceries for herself or anything. Or using the money for rent. Even though that's part of what child support is for. (These would be men I used to work with - don't worry, I don't have friends like this.) My brother pays child support and seems quite happy to because he wants to do right by his children and feels it is his responsibility. I don't know the proportion of men see it the way my brother sees it compared to the ones who don't want to throw a dime even in the general direction of a woman who is no longer a sexual partner or sexual prospect.
This guy planned to kill either the mom or child in order to avoid paying. That's how big a deal it was to him. He'd rather go to prison for the rest of his life, or be executed, than give any money to the ex. And, yes, he killed his own child.
http://enews.earthlink.net/article/nat?guid=20090103/495ef0d0_3426_1335020090103745721419