History.
>What makes you think that most have a desire to raise their kids?
Statistics.
> privileged assumptions
I think you've got a bit of hatred for this subject.
>Simpson/Huxtable thing is valid.
Fiction is merely an analog for the truth; in this case, a very minor, small part of the reality of parenting. No, Homer is not a good parent model. His character is more of an allegory for cynical irony than the reality, which is that a vast majority of parents - fathers - care very deeply for their children and want to see them survive whatever the future brings.
Anything less is the very apathetic, solipsism, we've been discussing.