I can't deny the fact that bitcoin is indeed riskier than majority of the investment opportunities present in the market. This is due to the unorganized nature of the market. Bitcoin market is organized in very few countries like Japan and Germany. But in majority of the countries, bitcoin trade is mainly controlled by the p2p exchanges. That is also a major reason for the fluctuation of its price.
The stability in price will certainly pave it way towards mainstream adoption but the speculators will also move away from the market. These speculators are the major driving force of the market and if they move out, the market will have a good amount of negative impact. So both have its pros and cons.
However, the increase in adoption rate is far more necessary than the speculators in the market. So stability is what I will personally prefer!
Stability would lead to adoption of bitcoin as a currency and not as an investment. People will give up on bitcoin by then and move on to another crypto, probably ETH, or LTC, or who knows some other shitcoin. But almost say goodbye to that ever happening, cause people are never gonna understand its purpose, what it stands for, why it was created.
Satoshi left his best work out in public, and look how awful that turned out to be. And no one wants to do something about it.