Most left handed people do not have a dominate side of their brain like right handed people do. Also left handed people on avergae have a higher IQ than that right handed people, right handed people do almost everything right handed while most left handed people use both hands.
Alot of the great minds throughout history were left handed including, Leonardo da Vinci, Michelangelo, Ludwig van Beethoven, Benjamin Franklin, Isaac Newton, Albert Einstein, Bob Dylan, Paul McCartney, and Julius Caesar just to name a few.
You guessed it I am a lefty also