One of my friend had to do this surgery
I'm sooo sad.Many people say that working as a computer programmer is more safer than
other jobs.But????

Actually my idea is when they design hardwaer like mouse keyboard and touchpads they
should be more carefull.Otherwise ppl will suffer from the helth problems.

what are your ideas about this?

People do this to themselves. There are a lot of different kinds of hardware out there, all fit for different uses. You should pick the one your most comfortable with, but most people just don't care. Being a programmer myself (25+ years) I can say I've never had any issues with this syndrome. The people that have (in my surroundings) all come from a different background, not using PC's.