Left Handed

While waiting for my parents in the office, decided to Google some fact or personality about left handed people, here are some, how true is these?
Source from http://l-pawlik-kienlen.suite101.com/personality-traits-of-lefties-a46563

• About 10% of the world’s population is left-handed.
• Some doctors believed that left-handed people are more likely to struggle with breast cancer, allergies, and asthma.
• Leadership. About 66% of American presidents in the last 30 years were left-handed men. Bill Clinton, George H.W. Bush, Ronald Reagan, and Gerald Fold were all left-handed presidents. Barack Obama and John McCain are both left-handed.
• Quick thinkers. Studies have shown that lefties are “exceptional.” Australian research shows that left-handed people think more quickly when playing computer games or sports. Left-handed people also tend to earn more money.
  
• Sexuality. Research from Canada reveals this interesting quality of left-handed people: they’re more likely to be homosexual. (WTFFFFFF???)
  
• Independence: Some experts believe left-handed people are more independent because they’ve had to get along in a world that’s not made for them. Dr Peters says that lefties are “slightly more resistant to social pressures, to have more of an independent streak.”
• Adaptability: Canadian research shows that left-handed people are more adaptable than right-handed people. That is, a lefty can use her right hand to do tasks much easier than a righty can use his hand. Left-handed people seem to be able to switch over more easily.

Really? Anyone else who is a lefty?