Who stipulates that Bitcoin must only for finance?
Satoshi did. According to him, Bitcoin is a P2P
electronic cash system. It allows for
online payments of electronic cash to be sent from one party to the other without intermediaries. So, it's not a network to save your social data on or a blockchain to create a
de-social network. If you don't believe me, check out what it says in the
whitepaper.
If everyone like you, thinks Satoshi did, Bitcoin must did. Then it's dangerous. Bitcoin is free, everyone can do what they want to do.