Bitcoin as a store of value

I’ve been thinking about this for a while now: bitcoin today is not being used for its initial purpose which was to use it as a currency. Today bitcoin is mostly being used as a store of value and big investors (just as many of us) are looking to make gains and sell at a higher price. If bitcoin never gets adopted widely as a currency don’t you think that the speculative bubble might burst at some point (e.g. many big investors selling) which would ultimately result in a big devaluation? Bitcoin is genius if used as a currency but what’s the value of it if it’s just being used as a store of value? I’m just worried that big investors have created a speculative bubble that will burst once they’ve made their aspired gains…