I always use it. Today, i tried without them and couldn't complete my lift maybe because i feel more secured using them. I hear that is not good cause it helps to cheat. BTW, i saw the powerlifters; in the world strongest man show, that the bar should lie 3 in. below the neck. wtf, the bar will slip my shoulder blade if i tried this. Those people have big shoulder blades. I don't know how they're able to without the bar slipping.
I know, just suck it up.