I don't think it's a need. But more a want. Some of us Western guys shoot 70lbs for longer distances. But even with todays bow technology you can shoot farther with less. So my setup is - Limbsaver DZ-32, Easton Axis 300 Arrows, 100 gr Thunderhead, 3 inch vanes set at 70lbs. Farthest bow kill - 2008 Archery Elk - Arizona 65 yards with complete pass through.