BTW, depression is a very common condition as well; it tends to afflict idealists, realists, pragmatists, etc. Depression tends to be very common among actors, artists and comedians as well -- ironic, huh? Examples include: Chevy Chase, Sarah Silverman, Owen Wilson, Drew Carey, Jim Carrey, Rodney Dangerfield, etc. More examples: Ashley Judd, Billy Joel, Buzz Aldrin, etc.
I wouldn't call it a blessing, but it sure is far from a "disorder". We need depressed people and ass burgers in this world.