My nails grow rediculously fast, but I can't stand having them much past the tips of my fingers.
If I even make an attempt at letting them get long, I pay for it. They're thin and weak, which translated into bending and ripping (ouch). That is, they rip if they don't decide to retain their bent shape. Not only that, but they're sharp as hell, and I always end up cutting myself with them. Even when they're short. So, I really have to choice but to bite them. If I clip them, the cut is too clean and leaves them perfect for slicing -_-