I just met up with my Brother-in-law and his friends for our yearly gathering. All of them are in their 30s and none of them are in what I would consider 'adult mode'.
They are all un-married/no kids, barely scraping by, partying every weekend/wasting money on weed and booze. Certainly no careers (mostly retail, some unemployed and still living with parents).
I wonder if these numbers will change with the new generation, because so many are not having kids or getting married.