Dillworth: More and more people are deciding not to have children because of the personal and economic sacrifices children require and because so often children are ungrateful for the considerable sacrifices their parents do make for them. However, such considerations have no bearing on the fact that their children provide the best chance most people have of ensuring that their values live on after them. Ttherefore, for anyone with deeply held values, foregoing parenthood out of reluctance to make sacrifices for which little gratitude can be expected would probably be a mistake. Travers: Your reasoning ignores another fact that deserves consideration: children' s ingratitude for parental sacrifices usually stems from a wholesale rejection of parental values.
Dillworth employs the argumentative strategy of distinguishing a category of person for whom the reason presented in favor of a given course of action is more telling than the reasons cited against that course of action.