Let's start with that because his decision to try and change a high-flying offense into a defensive team is one of the dumbest moves ever. Trading Shawn Marion for Shaquille O'Neal was idiotic. Marion was in his prime when Kerr got rid of him while O'Neal was on the decline.
Terry Porter wasn't even given a full year to try and get the job done. That's ridiculous. Firing a coach when his team is in the middle of the Western Conference standings is wrong. Kerr's decision-making has put the Suns where they are now: Falling off the map and making their star players (Stoudemire) want out. The management of the Suns is at fault here. Not Porter.