In a clever critique of libertarian novelist Ayn Rand, Eric Hague at McSweeney's imagines what it would be like to raise one's child based solely on Rand's Objectivist principles. The work of satire begins with a proud parent explaining why her child, Johanna, won't share on the playground:

The thing is, in this family we take the philosophies of Ayn Rand seriously... Since the day Johanna was born, we've worked to indoctrinate her into the truth of Objectivism. Every night we read to her from the illustrated, unabridged edition of Atlas Shrugged—glossing over all the hardcore sex parts, mind you, but dwelling pretty thoroughly on the stuff about being proud of what you've earned and not letting James Taggart-types bring you down. For a long time we were convinced that our efforts to free her mind were for naught, but recently, as we've started socializing her a little bit, we've been delighted to find that she is completely antipathetic to the concept of sharing. As parents, we couldn't have asked for a better daughter.
The parent is explaining this because Johanna just made another child cry after the child asked to play with her ball. The parent's justification for Johanna's behavior is pretty terrific:
Now let me explain why your son was wrong.
When little Aiden toddled up our daughter Johanna and asked to play with her Elmo ball, he was, admittedly, very sweet and polite. I think his exact words were, "Have a ball, peas [sic]?" And I'm sure you were very proud of him for using his manners.

To be sure, I was equally proud when Johanna yelled, "No! Looter!" right in his looter face, and then only marginally less proud when she sort of shoved him...

You see, that Elmo ball was Johanna's reward for consistently using the potty this past week. She wasn't given the ball simply because she'd demonstrated an exceptional need for it—she earned it. And from the way Aiden's pants sagged as he tried in vain to run away from our daughter, it was clear that he wasn't anywhere close to deserving that kind of remuneration. By so much as allowing Johanna to share her toy with him, we'd be undermining her appreciation of one of life's most important lessons: You should never feel guilty about your abilities. Including your ability to repeatedly peg a fellow toddler with your Elmo ball as he sobs for mercy.