What Makes a Player an All Star?

Is an all star a one dimensional player who can hit the cover off the ball? I would consider a true all star to be a player that is as above average both offensively AND defensively. Willie Mays was one of those rare players, so was Carl Yastrzemski and more recently, players like Dustin Pedroia, Ken Griffey Jr., the younger Barry Bonds and Ivan Rodriguez. These players either had or have gold glove caliber defensive skills (feel free to add any of the many that I've left out in the comments section) to go along with their superior offensive prowess at their position. It is my opinion that in today's game, offense is more sought after by the fans than defense, just look at the All Star game selections every year, or MLB awards such as the MVP or rookie of the year. For example, the winner of last year's NL rookie of the year should have gone to the better all around player, Colorado SS Troy Tulowitzki. Sure the defensive minded have the Gold Glove awards, but hitters ...