Because all it takes is one of your Supervisors or Bosses to decide to fire you for those accidents. If you are near Chicago, try YRC or ABF. They will appreciate your skills. Expect to spend your winters on UI and spring through fall in a pajama wagon at either until you retire. If you and your partner are willing to turn the barn, you can pull down $70k per year off the bottom of the board. The safety dept at Fred Ex said hiring me was not an option because I needed a bottom of the board accommodation because I cannot do any lifting or tow motor work and the bottom 10 slots were load and turns at the barn I was interviewed one year while on UI for the winter. If you have never run in a pajama wagon, remember you can get killed asleep just as easy as when you are driving down the road.
I once had a defective 5th wheel that latched on a set of empties, which I took to Toledo. Picked up a light van and had a problem getting the 5th wheel to latch, but it did and I figured I had my angle off. Took that up to Michigan and hooked a heavy set of pups to return. Yardman witnessed me visually inspect the 5th wheel was latched. Before I made it onto the road, dropped the trailers. wrote up the 5th wheel, reported to supervisor on duty the defect, he PM'd my boss. The next day a guy from Cinci was given the same tractor in MI after their mechanic said the 5th wheel was OK. He dropped his set before making it to the road. Supervisor PM'd his boss and he was fired immediately. Next day, MI city driver hooked up his van to peddle and dropped it coming off the dock. He was not punished, I was not punished. Middle guy was fired. Mechanic was not fired either.
I also had a brake malfunction on a wet down slope. Newer trucks have computer override braking on tractors by law. Computer braked the tractor causing a jackknife. Once I knew it was gone, I first kept it from going through a guardrail (destroyed about 30 feet) into a ravine saving my butt, then rode out the slide for about 400 feet knowing I was going to hit a Jersey Barrier backwards and that hitting the brakes on the trailer might kill someone if it swung around. Totaled the tractor and trailer, my boss forgot to fire me within the time outlined in our CBA because he knew I was one of his assets. Only times I ever called road service was for tires, because I refused to risk someones life over a shredder. Did hundreds of temporary road repairs with shop approval and carried basics in my bag to do them. I paid for the tractor and trailer I totaled in road repair savings.