By your logic and I'm not saying I entirely disagree or anything, but bank robbery would not entirely be an unethical position. The banks steal money through the process of Government (bail-ins, asset forfeiture, grants, limited liability, etc), they have a monopoly on the currency therein. In that regard anyone who continues to deposit their money into the bank is continuing to fuel this beast that operates on theft. So by stealing from these beasts are we reducing the size and scope of it's control and should I care about the fools who leave there earning within?