There are only 21 million total bitcoins that can be mined, what will happen if all bitcoin is already mined?
According to research
if bitcoin reach its limit, it will be disappear but it doesn't happen already so don't worry. I think devs will solve the problem to extend.
I've never heard such thing. But that is great threat coming if that's true.
After 21 million bitcoins have been deployed by the bitcoin blackchain, the only thing left to do is mine transactions. Miners at that point will make money off of transaction fees.
And miners fee will continue to rise ( because of the hashpower and it's difficulty to handle ).
One of the vision that I'm seeing in the future is that mining transactions of cryptocurrencies will be the main functions of banks ( if cryptocurrencies will ever replace fiat ). And then the miners fee will serve as the taxes.
And by the way, we still got to make a lot of hashpower to mine the remaining BTC.