Examples one finds in the philosophical literature are somebody who's seen the trial of a child of theirs, where they're being proved guilty of some crime that would drive the parent into a depression, maybe a suicidal depression.
Robert NozickGiven the complexity of interpersonal relationships and institutions and the complexity of co-ordination of the actions of many people, it is enormously unlikely that, even if there were one ideal pattern for society, it could be arrived at in an a priori fashion. And even supposing that some great genius did come along with a blueprint, who could have the confidence that it could work
Robert Nozick