Hi, my name is Chris - I'm a leftie.
So is about 1/3 of my mother's side of the family. Very few on my dad's side are, so we all know where the defect was...
Anyway, when I was playing sports, being a leftie was actually something that got me picked more often even though I was a mediocre player. Why? Because in any game where you must throw the ball or you hit the ball, the left hand puts a different spin on it, which throws the defensemen off because of it. In tennis, I (and all other lefties I've observed) have an uncanny knack of being able to make the ball turn nearly 90 degrees after impact when serving. I've never seen a rightie be able to do it. When simply playing, I've noticed that many times, the ball's angle after hitting the ground isn't always predictable, something I don't see with righties. In baseball, a leftie can throw several pitches that a rightie can't because of the need to have the ball spin a certain way.
I've also noticed that left-handed quarterbacks tend to have a more stable spin on their throws and a consistently tighter spiral.
Anyways, it's always fun to be a leftie who can do things rightie. Golf, bat, shoot right, but I do shoot handguns left on occasion for a change of pace.