There is no more important position in sports than that of quarterback. No other player has more responsibility to his team than does the man taking the snaps. Plus there is more pressure on quarterbacks than there is on anyone else in the world of athletics.
Only quarterbacks (and head coaches) are judged by their team’s record. No one looks back at the career of a safety or left tackle and cites the record of his team as proof of his effectiveness.
Quarterbacks are held to a higher standard than their teammates, which is illogical because of the complexity of the position.