I am left handed but can't get used to wearing it on my right wrist. My mother always wore her watch on her right wrist and it just looked wrong to me. Being left handed and wearing it on the left hand does mark it up more though.
Right handed and wear it on my right wrist. During the day at work on the computer, it sits on my desk! I just don't feel comfortable wearing it on my left wrist, though I wear bracelets only on the left! So watch on right and bracelets on left!