There are only 21 million total bitcoins that can be mined, what will happen if all bitcoin is already mined?
I think bitcoin mining is not that hard. People can dig up bitcoin by joining the bitcoin network. But if all the bitcoins are exploited then bitcoin participants will be boring, less attractive. Because when they exploit a bitcoin they can sell for a very high price, what they like!
Except there is a Nostradamus in the house no one knows for certain what the situation will be like. We can only make guesses and hypothetical suggestions. By the way, there is no way all the 21million btc will be mined because already some are lost whose private keys have been misplaced.