It's hard to conceive a working device that is less ergonomic than a laptop. They're really not made for human anatomy. From the screen that makes you crane your neck, to the staggered terrible keyboards.

While there are certainly posters here with people that have developed for 10 years without any issues, carpal tunnel is a lot more common than people think. It's very easy to cause irreparable damage to the body when using these devices that have about zero consideration for the human body.