No resistance is useless, of coarse, but it certainly does feel like it sometimes. Steel actually has some pretty good coverage, and the super effective hits against Rock and Ice are very much loved. Poison, though, only hits Grass for super effective and is completely walled by the plethora of steel types found in OU. ]: That and Gengar just spits in the face at taking Poison attacks as well. Kinda situational, but I'm sure you get my point.