The answer is simple ergonomics. If you have any notion of staying free of back, neck, arm and wrist pain for the rest of your life, you'll want to get comforta

The answer is simple ergonomics. If you have any notion of staying free of back, neck, arm and wrist pain for the rest of your life, you'll want to get comfortable to type for extended periods, along with any other repetitive tasks you perform. Bad ergonomics plus extended repetitive tasks equals potential serious and lasting injury. If it's just your personal device, it'll simply not get used and gather dust in a drawer. If we're talking about something you'd be required to use at work, then it's a legal liability.