Not OP, but I don't have a numpad amongst my keyboards. As my computing experience changed, I had to get used to touchtyping numbers above the letters; previously, I had almost always used the numpad.

My laptop has no number pad. I use it when I want a portable keyboard device, so an external keyboard would be irrelevant and unnecessary. Buying a device with a numpad built in would be a compromise that makes the built in keyboard even less useful, due to its non-centred location - in the unlikely event that everything else was identical.

My external keyboards have no numpad. They're ergonomic keyboards. One built for size, the other built uncompromisingly ergonomically. Ergonomic design actually speaks against number pads, since it means you have to extend you arm further to reach the mouse, and an uncompromised ergonomic design are wider than a regular keyboard since you want more separation between the two hands - so the number pad becomes an even bigger issue.

I've sometimes thought about buying an external numpad. But so far I neevr have.

> Ergonomic design actually speaks against number pads

Either move the mouse or the number pad to your left hand. I've left moused in the office for years (Yahoo! ergo team preached it when I joined), and it took a bit of getting used to, and limits your mouse choices, but it's actually pretty nice sometimes to be able to have one hand on the mouse and the other on the number pad. Mousing with one hand in the office and the other hand at home can help with overuse injuries too (although, using good techniques is much better for that). Of course, that still doesn't get you a numberpad on a reasonably sized laptops, but laptop keyboards are an ergo nightmare anyway, reaching over today's enormous touchpads is awful.

> Ergonomic design actually speaks against number pads, since it means you have to extend you arm further to reach the mouse

I don’t have this problem with my Kinesis Advantage, since the numpad is embedded in the main keyboard (using a mode shift/switch to access, which I have mapped to a foot pedal)

Real keyboards do, but there are far fewer of us with proper full-size IBM-style keyboards than laptops that are cut down to 13-15 inches and have more-or-less eccentric layouts.

I wouldn't say most. I rarely come across laptops that support a numpad for example.

External number pads are cheap. If someone's spending enough time using programs for which a number pad would be very helpful, it's probably worth the few dollars they cost and the tiny amount of space they take up (similar to a normal-size corded mouse—slightly larger footprint, but thinner)