It isn't quid pro quo but it shouldn't be martyrdom either. I think cutting your own throat for your kids teaches them something bad, not something healthy. (Yes, I am a parent, a very devoted one in fact.)
I wasn't speaking to that, it is of your interest as a parent to 'invest' into your child, be it time, knowledge etc... (honestly I never come here to read the articles, I touch the headline and gauge the article by its comments, so I 'maybe' offbase when declaring what I think.)
Regardless, you know as well as me - once you walk down that path no one knows it better then yourself.
Given the context of the discussion here, your remark sounds like you are defending the choice this guy made to shoot himself in the foot financially. That was what I was reacting to. I don't think it is ever a good thing to shoot yourself in the foot. You can invest in your children without undermining your own welfare. It does not sound like that is what this man did. He gave a lot of money to his kids and apparently now is (or feels) impoverished.
Context matters. By itself, I would agree with your sentiment. But in the context here, it sounds like you are saying "You should cut your own throat to 'invest' in your kids!" There are a lot of people who really believe things like that. I think it is very unhealthy for them as individuals and for the larger fabric of society.