I guess this is part of the reason why some Bitcoiner sare promoting Bitcoin as "store of value" rather than a day-to-day transaction currency. The argument being that yes Bitcoin is volatile but overall it's upward volatility. I think there is a limit to how far this argument can carry.
I think a cryptocurrency that people can easily earn (like social networking for STEEM rewards) can be both volatile and go mainstream. Provided there was enough liquidity for people to cash out quickly into their local currency if they wish.
However you're right, if we expect people to abandon fiat for crypto, crypto will need to be far more stable. Although I'm sure, there are still plenty of countries where people would trust the volatility of a global currency over the whims of their government.
Hehe, absolutely, I think many citizens like Bitcoin compared to their failing governmental currencies. Good point.