I actually have already difficulties to understand the term MM end user, which might amuse you and others if you look at my field and my reputation. But MM is very wide field, it is purchasing and inventory management, it covers the core logistics master data and even taxation and account determination, has interfaces to almost everything.
I have never worked with a business user who covered the same field that a MM consultant did, and I mean there is no profession called MM end user, not even in Germany where SAP has its headquarter.
What are you really doing every day? What is your profession? Are you working in the purchasing department or in a warehouse?