Why is it that banks are allowed to secure unsecured debts not paid back against your property?

This credit card debts etc.The banks charge higher interest on these supposed Unsecured products but if you fail to pay back they can secure their debts against ones assets. So there is no such thing as unsecured debt if you have assets. Therefore it must make sense to always have the cheapest debt which is [...] http://bit.ly/lG2O2L