SAP BO Analysis : Why macros?

Hello Experts,

I was doing my hands on for SAP BO Analysis tool -Office Edition, and I am analysing the practical usage of macros.

Let me give an example,

Scenario 1: We have filters section already in the Analysis tab , then why do we have SAPSetFilter macro. The same thing can be done directly by users by drag and drop.

Scenario 2: We can handle prompts and modify them directly from the analysis tab, then why do we have macros for same.

Please provide some real life scenarios where one cannot perform the above actions directly and have to go through some macro only.

Thanks in advance,

Richa