Left Handed Peripherals - Where are they?

Anonymous Coward asks: "Why is it that Microsoft and many other manufacturers of PC Peripherals do not make left handed models of their products? Every day the peripherals on offer become more ergonomic, have added buttons and functions. I am not able to use these Peripherals as they are only produced for Right Handed People, so I remain using these crappy mice and joysticks that have a generic layout. Are there any manufactures that produce left handed versions of their products (eg. mice and game controllers)?"