After working in the Playtex skyscraper office in the day, I would often spend a few evenings during the week walking around the deserted streets and neighborhoods of Queens--where I had walked around previously, while growing up in Queens in the 1950s and early 1960s.
By the 1970s, most of the baby-boomers who used to play in these Queens streets and had grown up in these neighborhoods were now in their 20's and early 30's and apparently primarily car-driving residents, if they hadn't yet moved away from Queens; and their car-driving parents were now in their 50's and 60's.
So fewer non-driving teenagers and children were now walking around on the streets of these Queens neighborhoods during the evening hours or now living in these neighborhoods compared to how many walked around on these same streets in these same neighborhoods in the 1950s and early 1960s.
Also, in the 1970s the Asian-American immigrant families who were living in Queens in the early 1980s had not yet arrived in Queens in large numbers.
