I agree with you,it depends on the complete usage and acceptance of the society.Imagine if tomorrow everyone wakes up and just decides to let go of all their bitcoin investments,dispose all their bitcoin wallets, and completely abandon whatever that has to do with bitcoin;bitcoin will simply derail till there's nothing left to talk of it anymore.
Bitcoin is susceptible to high volatility and price change,Bitcoin price and value can change frequently and drastically,and once the value goes down,you know what that means.
Since bitcoin is unpredictable,if bitcoin fails us today in anyway,it means there will be no more usage and demand of it anymore.