Ask HN: Why did MS never add 2 mouse and pointer support in old days?
If most pointer is like pointing with your hand, 2 pointers could have been like using your both hands. We all see advantage of multi touch now a days.
Using both hands is pretty tricky. I'm left handed, and it's much easier for me to do mouse stuff with my left hand than with my right. Using both together would mean my right hand is under moving, and my left hand would be over moving. Working out what pointer belongs to what mouse would be tricky too.
It would be a bit like one of those "brain training" games where they display the word RED but in a blue colour, and you have to say "Blue".
Also, multiple monitors still suck, even though they're commonly used. I can only image how bad dual mice would suck.
Not saying it's universal, but I use the mouse left-handed like I'm beyond drunk.
Beyond that, I can't think of a very useful purpose, despite the things multi-touch are useful for.
I am left handed and using mouse with my right hand from past 10 years, since i started with a PC.
its same problem with keyboard with 2 hands. I haven't though about it till now but just realized how proficient I am with my right hand in operating mouse.