WOW......Brett would make a great coach. Remember the question was would he make a good coach not will he go into coaching. In McCarthy's last two press conferences he said that nobody works harder than Favre. Nobody prepares and studies film harder than Favre.
Personality does not necessaruly make the coach. Coaches come in many different personalities. If you think Bill Parcells and Tom Landry had the same personality you're nuts. Do you think Vince Lombardi and Don Shula were the same. Even today....pit Tom Coughlin's abrasiveness against Jim Mora Jr's player friendly style.
Brett Favre understands the game better than most and what better way to honor his hero, best friend, mentor and father than to go into coaching.
Having said all that.........Brett wants to and needs to spend more time with his family. Coaching takes too much time.