that's not true. You could be bartering. Or you could be paying for goods and services directly via crypto.
Exchanges are popular because it's easy, and also it allows you to trade _fast_. And then the exchanges figured out that they could be holding onto your cash and/or crypto, rather than, you know, actually be _just_ a location for which exchanges happen.
Exchanges are popular because it's easy, and also it allows you to trade _fast_. And then the exchanges figured out that they could be holding onto your cash and/or crypto, rather than, you know, actually be _just_ a location for which exchanges happen.