My colleagues sitting in the same office range in age from 22 to 63. Apart from a strangely consistent interest in photography there's almost no overlap in hobbies, family, work/life balance, etc.
Some have kids at school. Some are planning a family. Some have kids at university. Some don't have kids. Some are single. Some get to work at 7.30am and some work until 8pm. Some get to work at 10am and some go home at 3pm. One is an avid cyclist, one sings in a choir, one manages his local church, one runs his son's football team, one goes away to a European destination almost every weekend, one's doing a distance learning degree.
We all work together, collaborate, socialise within the office, go out for dinner together every few weeks, focus on improving the team, the business, the shareholder value.
Age and outside-of-work-culture just don't really come into it.