I think EVERY parent has those brief dark thoughts of... shit, I wished I hadn't had kids. I wished I'd stayed a bachelor and chilled and enjoyed my youth (or in Borb's case, middle age) more. They might last for a few seconds, or be your mind looking for an excuse to vent when your kids make a mistake, mess, or if work's being stressful.
However, when Bob and Barb look at their:
dress wearing
raspberry blowing
debt accruing
Costco knife hoarding
Lego amassing
B.O emitting
fart firing
Muppets on VHS giving
cringe inducing
troll magnetizing
crooked dicked
woman lusting
bed wetting
brief defecating
mall cop provoking
pet murdering
autistically screeching
fashion blind
education fearing
church shunned
and internet infamous
-son, they must surely have wondered what they did to anger God. Bob had enough sense and decency to probably hate his predicament, though he wasn't a perfect man himself. His death was perfectly timed to get off the shit show before things went too barmy, though sometimes I think he sensibly faked his death and is now living in the playboy mansion, showing the bunny girls his stamp collection and plastic moulding patents.
Barb probably sees Christian from time to time as a monthly pay check, and a dumb farm animal for moving things. I have zero evidence to think it, but I think her fear of chris going across state that one time was losing her only pay pig. She's a sly, lazy, manipulative whore, and even now I'm not convinced she's as senile as she portrays. But then I wonder if she's capable of viewing chris with the contempt he deserves, not because a mother's love blinds her, but because she has so little self pride and respect, how can she judge other people?
In short, I bet they both thought they'd gone a kid too far at times, but Bob might have the respect and intelligence to look inward and wonder if it was some parenting mistakes by the time Chris was in college... though he seems to have taken the easy route of blaming the world when confronted on that gameplace phone call. Barb, with zero pride or introspection, probably wishes she had a litter of tard babies to milk Uncle Sam.