I almost never enter tons of numbers, so having a numpad isn't very useful for me. Especially since the fact that you have to leave home row means that there's

I almost never enter tons of numbers, so having a numpad isn't very useful for me. Especially since the fact that you have to leave home row means that there's an initial penalty to using the numpad that makes it significantly less useful for sequences of numbers <4-5 in length. Not having a numpad means my keyboard takes up significantly less space on my desk and means mousing is more ergonomic; not having one on my laptop makes it much prettier and lets me have nice speaker grills. I suspect that this is true of the vast majority of people, except maybe accountants, data entry folks, and some scientists. But I generally do finance, math, and programming just fine without a numpad.