There is no doubt about it that they have their places. I have a couple 3/8 drive breaker bars floating around. But honestly I have never needed to use one, and I work on a wide variety of things professionally. Used to use the 1/2" drive breaker bar, but after getting a Snap-on 25" flex head dual 80 ratchet the need went away for a 24" breaker bar. Only breaker I use regularly anymore is the 36" 3/4 drive SK one I have.