As great as bitcoin;s are for store of value, they sometimes have to be used in order to create more economic output, which means spent
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Bitcoin was designed to be spent. If it wasn't, then the blockchain wouldn't be necessary at all.
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Although many people think the best use of bitcoin is to store it over the long term, if too many people do this and too few people actually spend their bitcoin then there will be no reason for people to buy it in the first place