Earlier quoted context omitted.
Personally, I use the numpad to navigate source code and other text files. I very rarely use the mouse under those circumstances. So this very much depends on our personal style and use cases.
Yeah definitely somewhere where people should be allow a personal preference. What does that numpad offer that is not already on the rest of the keyboard? I think if you are comfortable touch typing numbers then there's not much advantage to having a number pad. (I've worked from laptops (without numpad) connected to an external monitor for about 15 years now so I may be missing something potentially useful here.)
Additional keys.
I use mine for macros.