If you're investing in cryptocurrency for rollercoaster returns you're not observing why a tool 'should' be used, which is how you know if people want to keep something around. If crypto can solve it's 'miner eco-drain' feature by moving towards proof-of-stake and/or the Tangle Ledger model we can handle these networks sustainably. Cryptos that align with providing certain human needs and agreements. A currency that is only a store of value is glued to the dangers of behavioral finance and speculation. Beware the Tulip Tragedy... Use a currency because you see it's logical and intrinsic worth.