I've never been much of a fan of Ayn Rand. Her egoism gets the motivations for moral living completely wrong. I'm not much sympathetic to her atheism. Her libertarianism on free will is contrary to my own compatibilism. Her political libertarianism is motivated in her egoism and ends up with results that I think are contrary to my own political conservatism, even on the economic and structural matters where conservatives and libertarians often agree. But it's nice to find one redeeming quality in her work. David Bernstein at the Volokh Conspiracy notes one way she influenced him that I can't help but agree with.
First, she indirectly persuaded me that caring about the success of strangers on sports teams that happen to carry the name of my city or school is a waste of time. This freed up thousands of hours for other endeavors more directly related to my own life.
I never needed convincing on this, but it's nice to see that Ayn Rand at least got one thing right. There are so many conceptual confusions, misrepresentations of views she's arguing against, and just complete howlers of arguments in what I've read of her writing, and I'm sure I'd disagree with her reasoning even on this one point. (I'm actually not sure how she can consistently argue against people choosing to do this out of enjoyment.) But until now about the only thing I've been able to credit her with is sheer force of will in maintaining her commitment to a ridiculous thesis (that morality consists only and completely in being selfish). Now I can at least acknowledge her recognition of one of the biggest wastes of time in American culture for what it is.
(Note: I'm not saying that it's not an enjoyable waste of time for those who enjoy it. That would be obviously false. I just can't see how that particular enjoyable activity should be better than other ones that are much more productive, self-improving, other-improving, and so on, and I can't see how it can be worth all the money that gets thrown into it, the permanent injuries that arise among those involved with certain sports, or the level of importance given to watching it that trumps all other endeavors. I certainly have my own obsessions, but I think mine all have at least some deeper importance, even if I might take them too far.)