Not particularly. I think there is certainly merit to trying to regulate certain types of sales, and punish those overstepping boundaries.
Someone buying/selling fake IDs or credit cards is a non-extreme example that comes to mind right away. Both may understand the consequences of the transaction should they be caught, however that doesn't mean that we should allow these transactions to take place here without leaving negative ratings and the like. IMO, thinking that these transactions should be allowed and go unpunished/unfiltered is a silly thing to think.

Unless I'm misunderstanding what you mean, in which case feel free to correct me.