Why would you care if people use Bitcoin for money laundering? Do you also care about people money laundering through Gold, businesses, or whatever other tool? Of course, if you follow the rules of the government, then yes, money laundering is a straight crime. But money laundering isn't always happening with money coming from theft, drugs, weapons, etc. It can also be considered you trying to 'clean' your undeclared profits that you gained with trading Bitcoin. If that's a heavy crime according to you, then probably the majority of the people here in this forum can be marked as criminal by you.