@Happiestyearofmylife
My mum users it as an excuse for my 30 year nephew to be reckless.
Reckless in what way though? You need to tell us more.
Also, 30 IS quite young IMO (I am in my early 50s.) But not very young. I would imagine many people who hoped they would get married and have children, (but are still single at 30,) are probably starting to get a bit concerned by then. But on the other hand they do have a few years left before they need to start properly worrying.
It's not too old to start a degree, or start a new career, or start a new life either, but it IS too old (IMO,) to go partying til 4am, to be rolling around the high streets pissed as a fart and throwing up, and to be skateboarding around town, with a bunch of mates.
As has been said, context is everything, and you haven't been clear about your nephew or why he is 'reckless.' How is he? In what way?