It seems like you just gave me permission to stop discussing. Subtle, yet still offensive. That's a neat trick, I'll have to try that. "Hey everyone who disagrees with me! You should all definitely feel totally free to stop the discussion here."
The number of my assumptions about you is three:
1) You feel guilty about driving and good about biking. Source: your words.
2) You care about human life. That's just extrapolation from 1) and from the fact that you were interested in (at least the comments on) this article, and is moreover, charitable towards you. Take that away and I'd be assuming you're something much worse.
3) You feel conflicted when you get behind the wheel. Probably the least fair assumption of the three. No real grounds for it, other than 1) & 2) and the fact of how strenuously you defend driving (but not in a way that proclaims it's right and just, rather in a way that says I'm wrong to remind people about it).
The rest of it is about people in general, people I've witnessed talking about this in various contexts in the past. I see I used the pronoun "you" occasionally in that portion, so if that was confusing, I apologize, it's the usage of "you" that means something more like "one" or "someone."
You've also made some assumptions about me, which I don't find "ok" at all, but I let most of those go as the cartoons they are. My flaws that you want me to enumerate (which would in no way affect your own, even if it turned out I was a mass murderer or an angel) do not include driving a car, and as I said, that's relevant because that's how I know it's possible to avoid it. And it's also the source of some other flaws you're witnessing, including being rude, pissed-off and fresh-out of patience with people saying how messed up the world and the roads are, while contributing to the problem. People hate being confronted with that shit, more than anything else. I don't care, this is not your "safe space" any more than the roads are mine. Nor am I an ambassador or an advocate trying to gently coax and sell people on something. I know most of them would sooner jump off a bridge than change voluntarily, and you implied that very thing. I just want to be a pain in the butt and remind them they're doing something that benefits themselves at the expense of others, and pissing people off like me in the process who have kids and lives also.