Bitcoin is a volatile currency. This is a merit for Bitcoin. Because if it were not volatile, then short-term or long-term investments could not be generated from it. If its price was stable, maybe Bitcoin would not have reached this level today. Why would you buy Bitcoin if you cannot generate profit from it where it is completely decentralized and no one has actually seen who its creator is yet. It is volatile and since Bitcoin came to the market, its price has been increasing in every four-year circle and creating new ATHs, on the other hand, it is going down again and the price is recovering and creating new ATHs. When this circle continues, curiosity about Bitcoin arises among everyone. And from there, Bitcoin is becoming very popular day by day, so I would say that Bitcoin's volatility is definitely a merit.
You would buy and use BTC for its principles and ideals then, and security too: BTC is not only about the profit, though most see it only through these lenses.
BTC is an alternative to fiat after all, not just a coin to hodl, though it can be done and is a great way to invest, it doesn't push the adoption forward, which, in case, pushes the demand forward..