They did it because of external expectation. The actor, Sydney Poitier's father disapproves of his marriage to the white woman. He rebukes his son. I did not ask to be born. Some are motivated to give because they expect a return on their investment.
Some people give because they want to control, because they want power, because it feeds their ego.
And yet, it's not about the kids. It's not about the recipient. It's about us. If we sacrifice for the children, it needs to be done freely, voluntarily. It's got to come from an open heart.