For me, it would be a choice between 1900s and 1950s. The 1900s was the last decade before the automobile became common on the streets. Up until 1910 or so, if you look at old photographs, it was all horses and carts. The coming of the car and truck transformed society, and not in a good way. Life was quieter before cars, slower, simpler. You used the horse to get from one place to another, or that recent invention, the railroad. At the same time you had flush toilets, electric lights, and central heating -- at least in the cities. Take a look some time at old photos of city streets -- the streets were for the people, not for machines. The sidewalks had more traffic than the actual streets. As for the 1950s, it was a decade of unprecedented prosperity and hopefulness in America. Everyone who wanted work was working. They couldn't build houses fast enough to meet the demand, so people were building their own houses with their own hands. I'm talking about white people, because America was overwhelmingly white in the 1950s. Everyone was raising a family. Every day, new inventions were being put into the stores. The degenerate assholes had just started to show themselves in the form of the Beatniks, but they were not a significant force in a population that was white and Christian. People went to church on Sundays. It was safe to walk most streets at night, and most doors were not locked. The 1950s was the last great, white decade before the coming of the degenerates and monsters destroyed our culture.