I was on a flight looking down at the cars on the highway and it hit me, like the higher you go the higher the radius is to cover the same distance as ground transportation. I’m sure there’s a cool reason and history. To make up for the extra fuel to get up that high and the extra miles added. Anyone? Does it have to do with less air pressure. And the efficiency aerodynamic wise? Or noise pollution? Visual pollution? I just always took it as a non ask, “We’re this high, cuz we’re in a plane. Duh”
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One of the central reasons behind aircraft altitude is that, as the air gets thinner with every foot climbed, planes can travel more easily and therefore move faster and burn less fuel, saving money. The air resistance is less the higher you are.
I’m also sure there are safety reasons and probably this also allows a higher amount of traffic in the same area… Like planes being right on top of each other at different altitudes etc
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