In many countries were kidnapped, beaten and held of millions of dollars in bitcoin even ransom by criminals. Due to this reason Taiwan
China, Russia, Colombia, Vietnam etc banned the use of bitcoin.
It's not the only problem my friend, the goverments are listing Bitcoin as a threaten to their economy also which means they don't and won't use Bitcoin for sure.
Bitcoin was using by crinimals are the common use for 9 years ago but i haven't seen the way to stop it.