I think yes! bitcoin is most proven coin in cryptocurrency world! bitcoin always deserve long-term trusted store of value! I suggest you for keep faith over bitcoin for best investment.
I will certainly say on this that whenever you want to invest for the long term, then the best thing available in the market is the bitcoin because it is very much safer for the projects with the longer duration of the time. This thing can be seen with the graphical pattern shown by bitcoin since 2009. I admit that the volatility exists but that is for only the shorter duration of the time. The time duration here must not be less than 200 days or minimum six months.