Bitcoin was supposed to be used as a currency, not only a form of investment. However, it's been more successful as a form of investment, a "speculative asset".
Do you guys think that this can change in the long term ?
Even though bitcoin failed as a currency, but it has succeed become a savings or asset to hold from earlier.
You can see how many peoples got rich because of bitcoin. They didn't use bitcoin as a currency, but as a savings.
I think that it is a fallacy to believe that. If bitcoin eventually fails as currency it will fail as a tool for savings and preserve one's capital in times of crisis, too. Tha basic use case for Bitcoin is the one from Satoshi's white paper: a peer to peer electronic cash system.