The Bitcoin solution was to create a currency that had a limited supply and transactions that were peer-to-peer so that no financial institutions would have financial power over the individual.
Yeah though Bitcoin was really intended to be used as p2p payment system but the limited supply it has is what turns it into more of an investment as price skyrocketed from a value of a penny into $66k+ as what we have today. The only problem with Bitcoin as a payment system is that fee is quiet high compared to the traditional payment system which is fiat but still it is for me the best if we treat it as an asset. It will still benefit the Bitcoin community in the long run.
Bitcoin is actually fine using p2p payment system also there is no central bank or any specific human control in cryptocurrency system. In this no country or government can track and stop crypto transactions. Crypto coins are getting more popular from time to time due to this convenience. Everyone is able to trade in bitcoin independently without having to be accountable to anyone.