First of all, the price of bitcoin will not be stable. That is why it is called volatile. And this is because of the demand of bitcoin in the present market. People would still use bitcoin whatever happens because bitcoin price will never be stable. That makes it more interesting.
And it is that volatility that makes the whole cryptocurrency space tick. It is good for traders anyway and I have been enjoying the volatility and for those worrying themselves already with their comments as if bitcoin is already stable, they really do not need to bother themselves much.
All the above, even if at all it gets stable to a point that the volatility is no longer high, it will still be usable for me for a lot of things that we cannot even start mentioning but for most of it, transaction purposes.