It may be 1 year, 10 years, or 100 years before Bitcoin or some other cryptocurrency reaches general acceptance.
In the meantime, if you are mining and saving Bitcoin, you are participating in the premine. If you are buying and saving Bitcoin, you are funding the premine.
By the time Bitcoin reaches general acceptance, some number of cryptocurrencies may also reach wide acceptance. If you are mining and saving, or buying and saving, those coins, you are participating in the premine.
There's nothing in the world wrong with premining. We are all doing it.
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