I'm 33, have been working professionally for 10 years and have had roommates the whole time. Different ones, too.

Unless you're strongly introverted, and/or suffer from social anxiety, having roommates is a great way to a) meet new people and b) save lots of money.

    Not everyone is a student anymore.

I'm 31, married with two kids, and we have housemates. It's nice having more people around, in addition to being cheaper.

(We've lived in four places since getting married, one without housemates and the other three with. We've definitely preferred the latter.)