Yes Volatility in Bitcoin is something of concern for something that is meant to be a store of value. However, the simple fact is that it was bought for speculation, and not as a store of value or a medium of exchange. The number of speculators dwarfs the number of people who buy Bitcoin for some practical use.You strongly believe in the future of this matter, Bitcoin will become the major currency in the future. This is just the beginning.
A currency has to be regulated, by definition.
BTC is decentralized and there will never be a world institution to regulate crypto.
Besides, I don't want to have a currency produced almost exclusively by the Chinese...
BTC failed, but the PoS model has a good chance of succeeding mainly because anyone can do it without the need to run a giant mining farm.