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I would guess that the cost of gamete freezing and ongoing storage and a vasectomy in youth is comparable to the costs of some forms of female contraception. (IUDs may be cheaper, though.) Using this as a contraception method would still make reproduction more of a pain, and involve trust in a clinic which many people would reasonably not want to be too confident in, so it's not really viable, but it is an interesting thought. (Also, using younger sperm would plausibly have a eugenic effect without, uh, telling anyone not to have kids or having to use fancy gene-editing tech, in that it'd have fewer mutations, but there could easily be some other effects that I'm not accounting for.)

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