[hinfaits]

>As far as wear and tear on the highway...

Right or wrong, I don't think you have to defend that point. The government sets these parameters under which you (or truckers) do business. It's not your responsibility to maintain the highway as long as each truck complies with regulations. And it's not your fault.

American taxpayers subsidise many other things that don't quite make sense (to me), like corn production. You don't see people blame farmers for doing what's best for their farm and family.