Yeah, if any one person decides that they don't want to end up in front of a grand jury, then obviously they shouldn't commit a crime. However, treating the accused fairly is an important aspect of our society.
Suppose 10-jacket guy was walking out of the store with his big back stuffed with jackets, and he accidentally bumps into someone and knocks them down. Without a grand jury there to protect the accused, the prosecutor is at liberty to call that "assault" and tack on some extra charges to help him push for the plea-deal and make his life easier.
Suppose 10-jacket guy was walking out of the store with his big back stuffed with jackets, and he accidentally bumps into someone and knocks them down. Without a grand jury there to protect the accused, the prosecutor is at liberty to call that "assault" and tack on some extra charges to help him push for the plea-deal and make his life easier.