If you make bitcoin illegal, criminals will use it no matter what or just find a way to get anonymous bank account if it happens to be cheaper. Making some tech

If you make bitcoin illegal, criminals will use it no matter what or just find a way to get anonymous bank account if it happens to be cheaper. Making some technology that criminals use illegal (think guns, knifes, cash, computer networks, snail mail) does not stop criminals from using it and does not stop criminals from committing crimes even if they stop using this technology.