Monero is useful. I think it's great. I wouldn't save in it though.

You don't need to and no one will force you to do so. It's a voluntary thing. Some of us store all value in BTC some store more value in Monero than BTC. It all boils down to individual risk vectors and assumptions that are unique for everyone. Personally I am looking forward to use Ecash based on Monero as in trusted environments it will provide the best privacy user experience one can currently have. I know I could do so via atomic swaps already.