Well Steve, ya can't administer for the overall public good and accommodate a variety of special-interest arseholes like the 4X4 idiots at the same time. They don't have a "right" or even a just cause to destroy property.

trails that allow ATVs in order to keep erosion to a minimum.

Yup and the best cost-effective way to keep erosion to a minimum would be to ban ATV's entirely, as any number of conservation-minded states have done.

Just because you buy an off-road vehicle does not imply the "right" to use it on public land as you see fit, and its time these yahoos realized it.