Computer mice that is. I know a guy who is left handed. Well he uses his mouse with his left hand and it bugs me a lot. It's not even that I have to ever use his computer. In fact I don't even live near him anymore but just thinking about it makes me wonder how he can go through life stuck with a left handed mouse. For instance, many offices have custom keyboard pullout trays with the mouse area built in to the right side. What would a left handed mouse user do? This isn't even an issue of "it's easier". It should just be a standard because otherwise everybody is annoyed.