User blog comment:God of nothing/What does it take to be a straw hat?/@comment-4374114-20130730160108/@comment-201.19.105.141-20130730190910

Brook is not an exeption, he is just old and Oda choose to relate his lost bonds with his crew and laboon instead of his parents. ALL STRAW HATS HAVE TRAUMATIC PAST, WHERE THEY LOST SOMEONE IMPORTANT    (not always dead, usoop's father left, sanji's sensei lost a leg and with it his dream), AND THAT SOMEONE HAS A DIRECT INFLUENCE IN THEIR GOALS