I have been hearing that Bitcoin will never drop to zero ,because if that happens people might buy entire bitcoins and bitcoin will finally come to an end and that would the greatest regret ever in the history of crypto currency,but what happens if it drops to zero?will someone be able to mine entire 21 billion ?
I think you've already answered your own question. Besides, Why should we ever think about that bad condition? How could you measure the 'zero' by the way? I guess no one will ever think about bitcoin hit zero, no one will believe. Bitcoin has a bright future since the demand is high. Even though the price isn't in good rate today, but all I know bitcoin always turn up back and pass even the worse situation before.