Bitcoin has definitely shown it can be more than just a passing trend, but completely replacing fiat is another story. Fiat currencies aren’t just about payments, they’re tied to how governments manage economies, debts, and policies. That’s not something they’ll easily give up. What Bitcoin can do is offer an alternative system one that’s borderless, transparent, and free from central authority. For people in unstable economies, that already makes BTC more attractive than their local fiat. But for daily transactions and stability, fiat still has the upper hand. So in my view, it’s less about BTC replacing fiat and more about both co-existing: fiat for mainstream use, BTC as digital gold and a financial safety net. The real question is how much space governments are willing to give Bitcoin as it keeps growing.