> As Bitcoin gives off less and less rewards (it halves the amount every 4 years), the amount of miners should go down, as it then becomes unprofitable for a lo

> As Bitcoin gives off less and less rewards (it halves the amount every 4 years), the amount of miners should go down, as it then becomes unprofitable for a lot of them. Unfortunately, there are second order effects. The miner reward is a constant selling pressure on Bitcoin, as miners must sell some of the rewards to pay for electricity and hardware. As Bitcoin gives off less and less rewards, this selling pressure reduces, which tends to increase the Bitcoin price (less supply for the same demand).