I have read in some places that mechanical keyboards alleviate the pain of RSI (vs. regular keyboards).
E.g.:
http://techshift.net/5-reasons-why-you-should-buy-a-mechanical-keyboard/
5 reasons why you should buy a mechanical keyboard
[...]
The third benefit is reduced strain. I realize this is closely related to comfort but I felt that this deserved its own section simply because of RSI(Repetitive Strain Injury). We use our computers for hours and some of us do not take RSI seriously. I take good care of my hands. And so should you. For most people, their hands are their livelihood. Hand health is very important if you are a musician, laborer, or athlete. One thing I’ve notice after spending a few months with my mechanical keyboard compared to keyboards of my past is finger pain. I use to get finger pain after prolonged typing on the rubber dome keys. They were all I knew so I didn’t question. It wasn’t until I was in the market for a better keyboard where I found out about mechanical key switches. Subsequently, it wasn’t until I was typing on them for hours until I realized my finger pain was mainly caused by the cheap rubber-dome keyboards. If you are on the computer for hours, or if your profession involves extensive amounts of typing, consider investing on a mechanical keyboard for this very reason. These key switches will reduce finger strain. Your hands will thank you.
How true is that?