As more people try Bitcoin mining, the Bitcoins run out faster. Experts estimate all 21 million will be gone as early as 2050, though some say it will be far as 2100 or so. Like in many cases, as the Bitcoin supply runs out, the currency will become more valuable. But will this cause a problem?
For comparison, as of late 2017, there were $1.59 trillion U.S. dollars in circulation. However, like U.S. dollars, Bitcoins can be divided, though far more than a dollar; you can divide it up to eight decimal places. While the supply is limited, some argue Bitcoin holders will always want to sell. After all, Bitcoin is currency. At some point, you want to spend your money.