Your experience might work in a closely spaced situation (hence your odd comparison of moving at a magnitude difference velocity), where most people pick the same mall and live close to eachother, but that's not how large countries work.
Not to mention, try carrying the things I put in my 5700lb car (without any planning) on your bike.
I made the math easy, but it's the same arg if it's 45. The only legit arg I can come up for your point is sometimes I want to run or ride a bike, but in that case, I'm going to avoid roads even if it's 100% 3 cylinders Geo's, or just follow my routine and exercise at the gym since it's more fun than running alone to xyz when I really just need to get something done.
Also it should be mentioned that your driving makes the city less pleasant and more dangerous to walk or cycle in, encouraging others to drive, in an unfortunate feedback loop.
Have you considered that some people deliberately don't live in cities structured around that because they consider not using (or paying for the infrastructure of) public transit a good thing?
The self-image and idea of what a successful American is supposed to look like wasn’t something I thought about until my cycling group had unpleasant encounters with bitterly resentful drivers in San Diego county. All middle-aged or older white guys driving expensive vehicles, clearly unimpressed by California law if it involves sharing with people unlike them. I should also note that our group was rather scrupulous about the rules of the road so it wasn’t a case of escalating bad behavior.
Tellingly SD will put in really nice bike lanes where there's already tons of empty space (Genesee in the middle of nowhere) but where you really need it, like University ave. in Hillcrest, they fight tooth and nail against it.
They like pretending to be bike friendly, at least! Nobody loves a good render more than them, and tour de fat is good fun.
In countries where more people cycle and walk it can be the driver who is the "other" but that's rarely if ever the case in the US.