Comment by Brockenstein

I'm sure fuel consumption isn't a concern, after all it didn't come up in Back to the Future, it just looked cool.

And I imagine people like the idea of going as the crow flies, shorter travel times, no traffic congestion and not having to fuss over road construction.

And since it's just a flight of fancy they don't have to consider the risks of falling out of the sky, mid air collisions, noise pollution, increased energy consumption, severe weather, running out of fuel, running out of fuel over Lack Michigan or the Atlantic Ocean or the human factor of letting people who can barely handle X and Y also deal with Z.

Maybe some people just have general optimism that the imagined benefits outweigh the obvious problems.