I think it would be great to live in a world where everyone can fly as much as they want without feeling guilty. This would be a lot easier to do if there weren't 8 billion people in the world.
There is no path forward that allows for continued improvement in quality of life for the developing world and also prevents climate and environmental disaster.
The only paths forward are: 1. fewer people or 2. lower quality of life.
Thankfully people are having fewer babies, so it seems like #1 may actually win out. However, the change in birth rate isn't happening nearly fast enough to avert disaster.