it's an alternative currency, it's point is exactly the same as any other currency. What's the point of euros ? why can't they just use dollars like we do.
The point of Euros and Dollars is so a nation or group of nations has democratic power over their own monetary policy. Bitcoin originally presented the idea of a never changing monetary policy but as forks have come and gone and power is beginning to concentrate in career miners that no longer seems to be the case.