Wait what ? are you crazy ?
It offers a personnal bank account and a way to exchange, and it's getting more wide than only the darknet. Take steam for example, you can pay game in BTC.

BTC is always critizise, but actually it's the crypto that is the most develop and scalable. You see ETH getting in trouble of scalability right now.

True that some crypto offer another value more than just "money". But don't forget that they all depend on BTC. I just hope that futur fork will lead to good :/