You look at teams who have won the Super Bowl and all of them have one thing in common, depth at each position.
Depth is one of the very few things that set apart the Falcons from being a legitimate Super Bowl team.
The Draft is the perfect opportunity for teams to take advantage of building depth at multiple positions. A prime example of that is the New York Giants selecting Jason Pierre Paul with their first round selection in the 2010 draft, when they already had Justin Tuck and Osi Umenyiora at defensive end. Not only did Pierre Paul become a fantastic player, but he also helped the Giants become a dangerous defensive line with the depth that he provided.
Oh yeah, lets not forget that the Giants won the Super Bowl in that same year, primarily because of their depth.