They are small in number of keys, not in size. Moving hands too much is not benefitial for typing, so why bother with it? If you need more keys, you can just at

They are small in number of keys, not in size. Moving hands too much is not benefitial for typing, so why bother with it? If you need more keys, you can just attatch an extra keyboard, macropad/numberpad or other input-device, reconfigure it with specific settings and waste all the space you want.