A bit of sexism for fun...
Do you remamber the classic wallet money take scene from Jeatson's TV oppening ?
Some fan with animation skills created a revenge, George's revenge :
I always imagined why the Jetsons never showed Earth as in the ground, but jusat on sky and space., Maybe thye Earth was quite destroyed or over populated on future, and people needed to move to sky. Energy wasn't a problem, given the fact homes was always levitating.