Some of us have them, some don't. As for me, I've been chewing my nails pretty much my whole life. I really don't know how it started to be honest, but once it did, my fingers have never really been the same. I tried that polish you put on them that tastes bad, but that didn't even come close to stopping me. Basically you just get used to the foul taste and chew anyways. The thing is, most of the time it's not even conscious, it's just one of those things I end up doing while driving or sitting on the couch. There are lots of famous nail biters, so I know I'm not alone. Elijah Wood (Frodo from ...