I am friends with a couple that has two young children (the oldest just started kindergarten). They don't have a car. They have had trouble finding apartments near public transportation, and it has limited job opportunities. The occasionally ask for rides to locations or for large shopping trips. They seem to like the benefits though. They get more exercise, no need to worry about parking, and no car/insurance/gas/maintenance payments. While my husband and I use public transportation for work, we plan on keeping our vehicles (or at least one of them) for when we have kids.