Until you can donate someone your time, that's not how it works. This take is "my 5 min is so important, I'm willing to risk someone's 60 years" (scaled to thousands of people).
You can also make other choices that reduce your 15min to begin with. (If the small difference there makes important changes in your life)
I don't need to donate them my time, they are also saving the same 15 minutes per trip. Do I also have to invent time donation to propose other time-savers like dishwashers?
> "my 5 min is so important, I'm willing to risk someone's 60 years" (scaled to thousands of people).
The scaling matters! Boston has 1.8 million drivers losing 150 hours in traffic per year, according to https://inrix.com/press-releases/2019-traffic-scorecard-us/. Imagine that all of that traffic was caused by our desire to save a single human baby. 270 million hours lost to save 700,000. Would you agree that's not worth it? That probably those 270 million hours would produce enough economic output to save a different baby instead?
To me, a 75% increase in travel time is high enough and 35 mph is slow enough that I think everyone's 15 minutes is, in fact, worth risking someone's 60 years, once every couple of years. I could be proved wrong about the math, but it seems to me it's mostly an argument about risk tolerance.
You can also make other choices that reduce your 15min to begin with. (If the small difference there makes important changes in your life)