Are you saying that you think that you in particular would be unusually prone to over-fixating on a child of your own, smothering them, and making other bad decisions? If instead you think that this just a common failure mode, not one that you are especially prone to, why would you think that future children would be worse off with you as a parent than someone else?
As for thinking it unfair for you to care more about a specific person than about everyone else, have you thought through how your notion of fairness would play out for actual children? Do you think there is no value to a child in their knowing that there are some people who have a special interest in their welfare (ie, who love them)?
Are you saying that you think that you in particular would be unusually prone to over-fixating on a child of your own, smothering them, and making other bad decisions? If instead you think that this just a common failure mode, not one that you are especially prone to, why would you think that future children would be worse off with you as a parent than someone else?
As for thinking it unfair for you to care more about a specific person than about everyone else, have you thought through how your notion of fairness would play out for actual children? Do you think there is no value to a child in their knowing that there are some people who have a special interest in their welfare (ie, who love them)?