Which is no problem EXCEPT that it is not widely available at airports. Look at the map linked at one of your links and see how many of those places where ethanol-free auto gas is available are *at* airports. Within 100 miles of me, for instance, there's ONE that has it on field and it's a grass strip (so no going there in the winter).
Sure, I can haul 4 ten gallon cans to the nearest gas station selling ethanol-free autogas, fill them up, throw them in the back of the car and then haul them into the hangar and fill up my airplane. But what happens when I land somewhere that doesn't have it on the field? How am I going to get home? Am I supposed to haul those 4 empty cans around with me in the back of the airplane (a safety nightmare), land, rent a car, drive to the gas station and then haul 40 gallons of gas back to the airport to fill up again? It's impractical. The reason its not widely available at airfields I've already alluded to: nobody wants to rip out and replace all the stuff they'd have to rip out and replace in order to sell this fuel. If the taxpayer wants to fund that effort, I'm all for it. But you and I know they don't want to do that. The public perception that "Ooooh, he flies his own airplane. He's riiiiiich" is too strong.
A few years back, at Purdue, an allegedly 100% compatible lead-free fuel was developed, but I lost track of where that was going (Swift fuel, IIRC). ISTR that it was some kind of bio-mass fuel that you could "mix" with 100LL (not that you'd do that, but it meant no ripping/replacing of existing infrastructure, draining your existing fuel - including unusable, etc.). Since I haven't heard anything about that in years, I imagine its not going too well.
My point is that we do NOT at present have a workable, safe replacement for 100LL *at* airports and until we do, banning it will mean the death of GA for all but the most monied. I'm not against using unleaded fuel at all. I'm not thick enough to hold that lead in the air is "not so bad." But I don't want to see GA harmed anymore than it already has been. If 100LL got banned this year or next, the value of my airplane would disappear and I'd never again be able to truly look down on the rest of the nation. ;0)
Edit: "ethanol free auto gas", there is no ethanol in any AvGas for a reason.
Sure, I can haul 4 ten gallon cans to the nearest gas station selling ethanol-free autogas, fill them up, throw them in the back of the car and then haul them into the hangar and fill up my airplane. But what happens when I land somewhere that doesn't have it on the field? How am I going to get home? Am I supposed to haul those 4 empty cans around with me in the back of the airplane (a safety nightmare), land, rent a car, drive to the gas station and then haul 40 gallons of gas back to the airport to fill up again? It's impractical. The reason its not widely available at airfields I've already alluded to: nobody wants to rip out and replace all the stuff they'd have to rip out and replace in order to sell this fuel. If the taxpayer wants to fund that effort, I'm all for it. But you and I know they don't want to do that. The public perception that "Ooooh, he flies his own airplane. He's riiiiiich" is too strong.
A few years back, at Purdue, an allegedly 100% compatible lead-free fuel was developed, but I lost track of where that was going (Swift fuel, IIRC). ISTR that it was some kind of bio-mass fuel that you could "mix" with 100LL (not that you'd do that, but it meant no ripping/replacing of existing infrastructure, draining your existing fuel - including unusable, etc.). Since I haven't heard anything about that in years, I imagine its not going too well.
My point is that we do NOT at present have a workable, safe replacement for 100LL *at* airports and until we do, banning it will mean the death of GA for all but the most monied. I'm not against using unleaded fuel at all. I'm not thick enough to hold that lead in the air is "not so bad." But I don't want to see GA harmed anymore than it already has been. If 100LL got banned this year or next, the value of my airplane would disappear and I'd never again be able to truly look down on the rest of the nation. ;0)
Edit: "ethanol free auto gas", there is no ethanol in any AvGas for a reason.