As I said, I thank them for paying interest on this amount. Obviously, it doesn’t put a dent in their assets and, for the rest of us, it is another way for the rich to contribute to the economy. It’s all good!
As for why people who can pay put charges on credit cards? Because it’s convenient and easy and creates an automatic record of their expenditures; they can also, for example, put a “staff member” on an account, who can then do certain shopping/tasks for them and pay it, but with accountability because there is a record of who/what/when/how much that comes to the major account holder.
Its nice at the end of the year getting the statement for the business card and everything is in a neat row and catagory.
Lets see, $500 office supplies, $1000 Beer, $5000 new hockey equipment...