People who dodge tax are effectively stealing from other taxpayers. Just because it's done through paperwork doesn't mean it's bening. Similar to software piracy, just because there is nothing material to be stolen doesn't make it anything else bar theft.
How would you propose we treat people who dodge taxes, or otherwise steal from you or others (without threatening your life and always assuming you cannot retrieve the stolen goods anymore)?
comunity service or fines perhaps, i dunno i just woke up