The weak excuse suffices for many people because the fault is perceived as proportionally weak. You don't pay for watching things you are not allowed to pay for

The weak excuse suffices for many people because the fault is perceived as proportionally weak. You don't pay for watching things you are not allowed to pay for anyway. Where's the harm? We can argue if that perception is right, but I think this is the reasoning that justifies piracy in the eyes of many pirates.