Yes, it is worthy to be a currency. Because it passed the criteria to be a currency according to the federation which incorporates currency. Also bitcoin is accompanied with a lot of companies accepting bitcoin so why not? It should be the top 1 currency in the world because it is a universal currency, means that anyone, everyone, and someone can use it anytime, anywhere.
Asking why it is the top currency? Bitcoin has the most number of investors. It is indeed the leading cryptocurrency with the most valuable goods are exchanged. So why not a worth currency? It is indeed more worthy than your worn brief underwear.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
Why? Because bitcoin can obviously rise its price and your worn brief cannot. Lol
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
But whatever anyone talks about BTC. The mere fact is, BTC is the best currency in the world!