Football is a game of attrition.
You can never have enough of anything.
One minute, Aaron Rodgers could be your starting quarterback and you could be on your way to another Super Bowl contending season.
The next minute, you are picking a new starting quarterback based on who is not as bad as the other.
The Giants have an all-world talent in running back Saquon Barkley.
Obviously, nobody on the roster or on the open market can replace him if he gets hurt, but the last thing you want to do is be fully unprepared if it the situation occurs.