Why is Bitcoin 21 million limit?

What Happens to Mining Fees When Bitcoin’s Supply Limit Is Reached? Bitcoin mining fees will disappear when the Bitcoin supply reaches 21 million. Miners will likely earn income only from transaction processing fees, rather than a combination of block rewards and transaction fees.

There is a hard cap of 21 million Bitcoin that can be mined , with the final coins being minted in around 2140. Once the circulating supply reaches its maximum, Bitcoin miners will no longer receive block rewards.20 Nis 2021

Bitcoin inventor Satoshi Nakamoto capped the number of Bitcoin at 21 million, to make the cryptocurrency scarce and control inflation that might arise from an unlimited supply . Bitcoin is “mined” by miners who solve mathematical puzzles to verify and validate block of transactions occurring in its network.17 Ara 2021