Why did I do this?
-Deadlifting strength is not more important to me than,say,pullover strength. Just because it's popular is not meaningful to me because I'm not a powerlifter.
-GHM takes the lower back through a drastically larger ROM than the deadlift which,depending on your form and proportions,barely moves your back.
-GHM (or good mornings,which I don't do) are isometric for the hams (hip flexion) but so is the deadlift,and I supplement with ham curls
-Deadlift was hurting my back. I think I was doing damage over time.
GHM/back extensions work the erectors very well I find, and there is apparently zero strain on the disks while with the deadlift it feels like a draw between muscles and joints.
-No longer have to worry about my forearms,hands and upper back being spent and considering awful TBT and can more easily afford a split.