I'm not the one that came up with it, but it is rather cruel. I'd opt to just go with learning to write with left hand... And I suppose I will now have to open the group up to Righty's...
I think there are certain things that we're just trained to do with a certain hand (although why is it always the right hand? lol). When I'm at work using my box cutter (I stock shelves when I'm not doing homework or at school...) I always use the left handed one (the left handed one is red, and the right handed one is green, so it's easy to distinguish.), but I sometimes use it in my right hand. Like when I need to cut the plastic or tape off a box, I'll switch hands to get one angle... Kinda weird lol. And I don't even remember what hand I use to stock milk with...