I would much rather pay 1% more for my food than 10% more for may healthcare. For many there will be no amount that can be paid to keep up with antibiotic resistant bacteria, it will kill people.

I am sure that farmer's would rather risk their livestock than risk their children or grandchildren.

I think the only way this practice can exist is when people do not understand or are coerced into doing it. Many of the largest farms just have people following rote instructions and not actually understanding what is happening.

Let's compare to an easier to understand industry, think about fast food. The people in the kitchen at a McDonald's don't need to know how to cook, they follow the instructions and put uncooked meat in a machine and food comes out of the machine. If that process killed kittens somehow the McDonalds worker would never know.

I suspect the near minimum wage workers manning livestock farms and farmers that might not have the benefit of a full education, simply don't or don't accept that antibiotic abuse creates a breeding ground for something will kill some of their children.