I know that, i did that research too. It might be faster than that, and it will definitely be a good pension investment if your risks are adjusted accordingly.
I think a bigger rise of volatility will come after the real big adoption will start, not to mention the speculative mania that can start if price breaks above 500$.
It definitely needs 3-4 years after the adoption phase to stabilize to be considered a life-savings graded investment.
Yet given how fragile the pension funds are today, i would be more worried of bail-ins rather than bitcoin volatility.
I can't imagine if the price breaks above 500$ with a momentum, for sure we will see another 1000+$ in the bitcoin markets.
Or if the big money from pension funds start coming into the market... wow!
It will but I dont know when.
There needs to be a trigger thats for sure. Greece was not enough, since greeks people dont speak english and dont have that high tech skills.
Maybe the chinese calamity will boost bitcoin, the chinese guys are more investment orienters and opportunists and tech guys.
I think big waves of money will come from China, because those guys have alot of savings ready to be put in bitcoin.