Ryan Sager considers how sex and love drive the economy:

[T]he urge to find a mate drives us particularly men, it seems to increase our productivity and make bigger investments in human capital (e.g. education) than we otherwise would.  It’s also suggestive that so much creative genius in fields as diverse as physics and jazz seems to peak before or around 30. And, that marriage seems to have a negative impact on productivity in such fields.

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