Let's see, there are still marriages, families, and children. People form friendships, have people over for dinner. After work they go for a drink, play some cards, listen to music.But when you say that social institutions are the same you are not correct.But think of how many social institutions and practices are generally the same.
The society, the social forms, don't seem really too awful different.
It would depend on where in the world the person was. 5000 years ago in Eygpt the court system included social equality, impartiality, and legal representatives. Sumerian and Babylonian culture had codified laws a few centuries later.What kind of justice do you think a peasant could count on back then?
From what we've seen, the legal system in the future doesn't seem to be fundamentally different than today's. The episode Court Martial showed the use of English-style case law, and there were obvious rules of evidence. The concept of case law goes back for centuries.
The matter of Dr. Bashir, where his parent took him out of the Federation, had a birth defect medically treated and were (later) penalized for what happen outside the Federation shows that the Federation's legal system is flawed.
Advanced technology.Now fast forward to TNG era. On Earth there is no conflict over resources, no one is allowed to starve to death or die of exposure or from a preventable disease.
Depend on what you mean by "we don't."Right now we have the technology to feed everyone on the planet, but we don't.
The American people exports vast amounts of food every year, a third of our agricultural acreage is exclusively used to grow food for export, about half of all grain on the international market is grown in America.
Starvation and malnutrition numbers have been going down every year on Earth for decades, it's a ongoing process with stead improvements.
Correction, they were better off, they as people were not themselves "better."We could still argue humans in the 23c were still better ...

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