The body must protect the head at
all costs. The quarterback is the key to
the offense. A team must have a good
offense so that it can score a lot of points and win games. Quarterbacks are vulnerable during the
process of throwing and must be protected by good offensive line.
The quarterback has possibly the most challenging role in any game and is always likely the highest priority target. It's easy for a quarterback to get injured after being sacked during many different games. This is why teams should focus on protecting their quarterback, definitely so if he is skilled so that he may play for the team for several years on end. An injury could prevent him from doing so.