Ultimately I gave up and moved to a place that was a better fit and my only regret is not doing so sooner. I still believe that it's possible for any city to eliminate traffic deaths, but I no longer believe that this obligates every city to make the tradeoffs this requires.
It reminds me of the Paul Graham essay [1] about the benefits of surrounding yourself with people who care about the things you care about:
> It's not so much that you do whatever a city expects of you, but that you get discouraged when no one around you cares about the same things you do.