Don't extrapolate your unique and personal reactions to and experiences with parenting to the whole population. Raising children is one of the most unique personal things a person to experience, assuming your reaction to it is in any way the 'norm' seems extremely presumptuous.
He does not do it, as far as I understand his post correctly. Funnily, I quite often find reactions such as yours coming from people who oppose the idea of having children.
A parent telling you how happy they are having the kids IS NOT telling you that you should do the same. They're just enjoying it and exposing it as a maybe these days forgotten way of realization as a human being.
As other people in this thread have already pointed out, lots of people have children either primarily or at least partially as a way to attempt to financially secure their future. The OP makes it sound like they're doing it wrong.
PS. I am in no way opposed to the idea of having children.
