And with a six-fold difference in carbon footprint of traveling between flying and taking a train, that's borderline criminal.

I know you really don't mean it but... Criminal?

As lover of flying I might have my feathers ruffled but there's certainly other pros to flying (the view, the feeling of takeoff).

Maybe I'm just trying to justify my love of flying, still though.

Polluting it's like firing a shotgun with tiny bullets in the air.

People are being killed by pollution, both directly and indirectly.

But the bullets are invisible and the financial interests are very big so most people accept it as a necessary evil...

Well, maybe the criminality isn't obvious in your own life (or mine). But to a person who lives on, say, Tuvalu, I'd imagine it's a lot more obvious, even if it is "death by a billion small cuts".

So "lovers of flying" should just push environmental costs onto other people not just by not paying carbon taxes, but even by paying no fuel taxes whatsoever?

And why don't I "mean it"? As far as I know, there are already some investigations in progress against major oil companies.