Yes. It allows criminals to move significant amounts of money without much effort, intervention or tracking. The current ransomware issue is a direct consequence of the attackers being able to utilize a relatively safe and cheap payment channel. Without it, the endeavor makes no economic sense.
It also helps people around the world to send and receive money that doesn't have the privilege to do so in a conventional way.
It is easy claiming it is useless because you don't need it, when you have no limitations or in the best case you don't need to swallow fees that start from 30%
