Left-handed people have an athletic advantage
Since left-handed athletes are in the minority, they typically learn their sport right-handed. In this way, left-handed athletes are able to better adjust to whatever comes their way. 20% of history's best boxers were left-handed, and almost 1/3 of the MLB is made up of left-handed players.
So, if you're a lefty, consider taking up a one-on-one sport!