I appreciate your thoughtful and detailed response. I'll need to think about it for a while, too. It had not occurred to me to consider the possibility that someone else's FSD might protect me from the general incompetence and unreliability of amateur motor vehicle operators.
(Jumping a light in the dark? Not thinking or learning to navigate by verbal instructions from your satnav or phone, instead of compromising the primary sense you must constantly use to drive without risking manslaughter? I'm sorry, but if this is the standard, I really can't describe it other than it is...to say nothing of your considering safety less important, as you say, in the "inner city" that is my home.)