There's nothing special about dying; there's nothing special about knowing someone who has died, about losing someone.
So when you imply . . .
You are happy with multiple thousands of unnecessary deaths for the
benefit of going fast (I say you're happy because I haven't heard you
rail against high speed limits)...
. . . I can only reply that, while any accidental death is both regrettable and preventable, and while I wouldn't fundamentally object to a lower speed limit, there's simply nothing special about accidental death. I don't make it my cause or my priority to ensure that the legions of the bourgeois are adequately empowered to make decisions that limit individual behavior so as to prevent accidents.
That said, by all means, make driving safer. Hold auto companies to a high standard (I actually see more utility in constraining corporate behavior, since I consider corporations de facto governments, concerned with borders and hierarchies), lower the speed limits, do what you will. I'm not likely to oppose you. I don't make it my cause because death, in itself, is not what concerns me. The body of the mediocre intruding on the primacy of the individual IS.
. . . but you cringe at the notion a handful of innocents will be executed
for the benefit of ensuring murderers don't unfairly live out their
lives while their victims don't.
I can't really see how the notion of "fairness" enters into it. The victims are already dead.
I suppose, since there's no scientific analysis telling us where genius is more likely to emerge, that someone who dies on a freeway, someone murdered by a sociopath, and someone falsely accused of a capital crime may all have an equal chance of being someone that civilization needs, a de Sade or a Brecht, a Giordano Bruno or a Samuel Beckett. But the first dies by his own agency (at least to a degree; it's possible that he didn't cause the fatal accident, but he voluntarily entered a system--the freeway--where such death was a real risk [granting that merely being alive is, almost by definition, risking death]). The second is not only NOT saved by the execution of his or her (alleged) murderer, but there's no evidence suggesting that other murderers are deterred by this execution. A case can be made that this murderer is deterred from future wrongdoing, but that only holds if the person executed is indisputably guilty.
In other
words, relief from transit boredom is not just better than justice for
the murdered, it is radically better.
I don't happen to believe that execution of the murderer = justice for the murdered; you're going to have to make that case independently before that sentence is anything more than the vindictive bleating of someone who's losing the argument, so tied to truisms that he mistakes his dearest axioms for indisputable fact.
You might also note that I'm probably not the only one who meets or exceeds those speed limits not to alleviate boredom, but to get where I'm required to be in the time allotted. Convenience, logistics, what have you are no more the "value" I'm defending than is "relief from transit boredom," but I think it's only proper to call you on the carpet for such rhetorical chicanery.
My feelings on the death penalty are mixed enough that I'm going to err on the side of my principles; one of those principles is that death by individual agency is preferable to death at the hand of that yawning sphincter we call the state.
Since you are a person of high principle, I'd think you would argue for
the rights of the murdered as much as you would those of homemaker
homosexuals.
I am a person of MY principles, inherited though they may be from anyone mentioned above, Nichiren Daishonin, and whatever leftover Catholicism I haven't yet managed to scrub away. I am of high principle in that I hold most highly to the principles that strike me as most urgent . . . according to no one's criteria, finally, but my own. So what you--a nominal theist, a conservative, a natural law advocate--think "high principle" means is as irrelevant as yesterday's baseball scores.
In point of fact, I'd be as satisfied with an elimination of civil marriage as I would be with equal rights for whatever homemaking combinations wish to make homes. What rights, though, could the murdered possibly have? They're DEAD!