From my experience, replacing a tomahawk handle with something that tapers does things to the weight, balance, and strength of the handle that I dont like. When you chuck (I can't call my swing a throw) hawks you'll break handles, heads will loosen, etc. Tapering or thinner handles just help these processes along. It will also shift a greater proportion of the weight to the head, altering the spin of the hawk in the air. Im sure some of the others have their reasons as well if they've ever made a handle. Plus, its just much easier to make a uniform handle. Hope that helps a bit.