I don't want him to be a nailbiter for a few reasons.
First, it's just not a very appealing habit. I cringe when I see/hear people biting their nails. They may as well be pulling them across a chalkboard.
Second, it's an absolutely fantastic way to spread all sorts of diseases, especially if you're hanging out with a dozen other toddlers every day in daycare. He's past the "explore your world with your mouth" stage of his development, but now that he's shoving his hands in his mouth so he can bite his nails I'm sure he's going to be sick more often than he would if he could just keep his hands out of his mouth.
Finally, some people don't just stop with the nails will bite and pick their cuticles until their fingers are raw. My MIL does this to the point where she has open sores on some fingers, and Xepherys isn't a whole lot better (sorry babe).
I'd just rather he not bite them at all since extreme nail abuse seems to run in the family
When I talked to him tonight I said this: "Honey, don't bite your nails. It's bad and it makes your nails look icky, and it can make you sick."
But, like I said a few posts back, I'm not going to stress too much yet. Maybe it's just a passing thing that he'll grow out of after a while. *crosses fingers*