Left handed here. My right hand is useful for carrying things. However I am right eye dominant, so that means I am hopeless at any sport that involves aiming. I also don't have binocular vision, so I am hopeless at sports that involve balls or other things flying towards me. I can walk pretty well, though, unless there are stairs.
I have a degree in geography. There were way more lefties in geography than in the average population. I think about half the students in my year were lefties. And now I work in the arts. And again, way more people I work with are lefties. I usually assume that artists are left handed.
One night, after an art opening at a gallery where I was working we all went out to dinner - the staff, the artists, a few friends. Of the 10 people at dinner, 8 were lefties. And the two that weren't, they were spouses of the artsy folks. One was an engineer.