In large cities, you're still surrounded by many peers. While they may be harder to interact with due to distances, you'll likely also have the means to reach them relatively easily (car, public transportation). Tech meetups are really easy to find in nearly all large cities.
Of course, there are more responsibilities (the changing diapers at night part) when you're older, but more freedom (no parents that are cramping your style). I say these things with my own time struggle as I try overcome the cubicle by day and masters degree classwork by night. I really do miss the college student schedule with relatively low amount of time in class and a lot of freedom and flexibility in setting my day-to-day schedule.