Worldwide acceptance is good but all the Traders are earning their money from the volatility of Bitcoin and the differences between two prices, so they cannot survive in the case of Bitcoin would be stable and used as a currency.
Very wise statement, I think in it is almost the main reason of its volatility, big players just need to earn money, but it will not last for a long time, as far as bitcoin will be used as the currency and will be more stable then fiat currencies, the world will change.