Its origins along with Star Trek was born in the 50s and early 60s a truly revolutionary time concerning technology, we had just gained power over the new energy source of the atom, the transistor was born, the space age had begun, television was beginning its march to change the world, the consumer appliance age had begun, the teenager was beginning to make their cultural contribution.
These things happened fast and they where all positive, there was no cost the Earth had unlimited resources and people in white coats where trusted. This positive period was also the golden age of science fiction, naturally they only thought the future was bright.
It was in 50 early 60s America was the best place and society ever reached more people in the upper middle classes, it truly was a land of forward thinking and opportunity. Its literature and film reflected that, but it was a veneer, there where sections of its society who where not invited.
So 2010 was just a story reflecting the age and place it was written in.