A lot of stuff is insinuated. Such as there’s no overpopulation issue on Earth due in part to WW3 which decimated it globally and in part due to a lot of groups leaving to create their own colonies, with their own local rules.

Far as I remember, which may be wrong, people on Trek Earth live more freely and more spread out. The Picard vineyard is an example of doing something because you want to and at the same time, continuation of the family tradition.

But freedom doesn’t mean automatic success. Humans are still humans. We have our emotions and a state of mind which changes with the weather.

Trek Earth guarantees a standard of living, but it cannot guarantee happiness.