@starkatt I used mine a lot more when I was regularly working with Scream/Impulse/Schism Tracker; in fact, they assume the presence of one! I doubt my next keyboard will have one; having that space for my mouse is worth plugging in an external keypad when I need one.
Of course, I'll have to find an external keypad that actually sends keypad codes, not top-row-of-81-key keycodes. *rolls eyes*