you are right, the 90% bitcoin already mined, so there are only 10% bitcoinin the world that can be mined, you need to know that the diff increasing. so 10% will be fully mined in a very long time, and if its already mined 100%, i think the price of bitcoin will increase, because the demand will be higher than the supply. am i right?
Yes exactly! But that 10% remaining will somehow be difficult to mine as the block will be much more difficult to solve, as the OP said it would take several years or even decade if possible to mine that remaining 10%. But somehow bitcoin will remain the most trusted and will break many all time highs along the way as the supply is very limited. Also the fiat are depreciating because of the inflation so what will likely to happen is more and more people will start to choose crpytocurrencies over fiat especially bitcoin.