Consider you are a damn good driver, better than self-driving software. If self-driving software can reduce your risk by giving you a safer environment(by replacing lots of bad drivers), but it will increase your risk when handling risks(because it's not as good as you). Would you like to choose self-driving software?

The point here is, no matter how good the driving environment goes, I do not want to lost any chance to survive(If I'm a good driver).