The 4-year sharpe ratio of Bitcoin outperforms every other asset over its entire existence. Treat it like a 4-year bank certificate of deposit and watch your wealth skyrocket.
Bitcoin is a currency (space) technology AND bitcoin is a savings (time) technology. It is the best money ever available to humanity.
If the volatility concerns you, invest less in bitcoin. If you want to save more in bitcoin because it outperforms everything over enough time but you can’t save as much as you want, spend less.
Bitcoin isn’t negotiable. Using it comes at a cost. Adapt your life and decisions appropriately.