Earlier quoted context omitted.
you can also use fiat to pay for things. what's the benefit of bitcoin compared to say, USD for paying for things? is it cheaper or faster to buy $1 trinket using bitcoin vs. paypal?
The typical argument (not one I necessarily agree with or am making) is that there is a limited supply of Bitcoin, whereas the supply of USD is controlled by US monetary policy. On the other hand, it is "decentralized", i.e. backed by the blockchain and not a political body. Again, not my arguments, but arguments I have heard.
They'd run out eventually, but you'd still have lost out