For me it'd be an unnecessary tool, in the same way that a new powertool is often an unnecessary tool. It'll absolutely get used, but I could get by without one.
The biggest use for me right now is my wife is pregnant and won't shoot with me anymore. Last time she was pregnant she could feel the baby kick with every shot, so she's convinced it could damage the baby's hearing. You can't really put muffs on an unborn baby!
The biggest use for me right now is my wife is pregnant and won't shoot with me anymore. Last time she was pregnant she could feel the baby kick with every shot, so she's convinced it could damage the baby's hearing. You can't really put muffs on an unborn baby!