And what would be the difference between using bitcoins and banknotes or gold? With these you can't do money laundering? Come on, be serious ...
I think we don't need to be hypocritical that bitcoin does make it easy for undercover transactions because of the role of decentralization and anonymity. where the facility is not owned by fiat and gold. although still you can do money laundering but with that way. your assets are easy on the trace and taken over by the government. whereas bitcoin is free of all that