There was a patch when I used to write regularly on the topic of left-handedness. This was partly inspired by the number of lefthanded people in my immediate family: my mother (who'd been forced to write with her right hand as a child), my mother-in-law, and two children. I'm also partly ambidextrous - as is one of my grandchildren, I've just discovered. We both play certain sports lefthandedly, even though right-handedness is our norm.
If you want to see some of my lefthand articles on the Net check out these: Look Left and Get it Right, Eight Things about Left-Handedness, We're All a Little Right and Left-Handed, and A Bit Sinister, in which my (slightly disguised) mother has a little rant about some Canadian professor who stated that left-handers were worse drivers than right-handers (partly based on an assumption that everyone in the world drives on the right side of the road). His conclusions, like so many reported in the media, came across as nonsense, and would probably prevent left-handers from getting cheap auto insurance rates compared to right-handers.
Left-handers are better off than they used to be, but there are still odd prejudices around, as you'll note if you read any of the articles above. (No....a promo for my articles? Pulease!) One that I remember reading somewhere related to there seeming to be a predominance of movie actors who were left-handed. It was noted that in many movies, when someone writes something down, they write left-handedly. You'd think that would show there was a bias towards left-handers, rather than not. But the conclusion this particular writer came to was that it was often more convenient for the director to film the shot from the actor's right, and in order not to block what they were writing the actor was asked to write with his left hand.
Someone else has noted this left-handed writing thing in the movies too....and if there seems some inconsistency about whether I put a dash between 'left' and 'hand/handed/handedly', there is. I've never been sure about which is the proper option...if there is one.