When I first started in archery the pro-shop/joke that setup my first bow advised not to use loops because of breakage, however after talking to another shop owner closer to where I lived at the time, explained the benifits of a loop. since the shop that sold me the bowthat hadto short of a draw length anyway (diddn't find that out till after I bought the bow but that's another story). after I put one on I'll never shoot without one again. There's no nock pinch, the nonk is centered in front of the release, the serving doesn't get worn, there's no upword pressure on the nock that could eventauly force your nocking point up, and I've never worn out a string loop, I've replaced strings and used the same loop over on the new string. they drop your draw length a little but the tradeoff is worth it.