Another difference is between suburbian adult lives and high-desity city adult lives. Compare an adult life in NYC or Chicago (or many European cities) and those people have easier access to visit with friends, stay out after work, see exhibits, try new restaurants. Suburban adults go home and tend to stay home.
Also having children changes things quite a bit for all adults.
Also having children changes things quite a bit for all adults.
I wish this article was longer.