It’s not just for decoration. You can use it as a legitimate pointing device. Nudging it will move the mouse cursor and tapping it with your fingernail is clicking.
It takes some getting used to but you can definitely use it for normal office tasks if you wanted to. That being said, I still personally prefer a mouse. But I have known some people who like using the nipple.
Is it actually usable? I never owned one
It’s not just for decoration. You can use it as a legitimate pointing device. Nudging it will move the mouse cursor and tapping it with your fingernail is clicking.
It takes some getting used to but you can definitely use it for normal office tasks if you wanted to. That being said, I still personally prefer a mouse. But I have known some people who like using the nipple.