Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

When is the cut-off mark for being young?

59 replies

OneOfEachPlease · 13/03/2026 13:53

Not a thread about a threat, but inspired by several threads! Am I being unreasonable not to understand at what point do you change from being young to being an established adult? And am I being extra unreasonable, not to understand the consensus on how long a relationship is before it’s serious.

Obviously all of these things are a bit “how long is a piece of string”, but there seems to be a real divergence about when people are young, free and single and should be prioritising their career and when they are at the stage in life where they should be a proper adult who’s got some responsibilities etc. So just hoping to garner views!

I’ll go first. My view is that people are adults basically as soon as they time out of being somewhere between 18 and 21. But that everybody needs help sometimes and you can’t expect people to be completely independent overnight. And I think any relationship which stretches more than 18 months is serious but that does not mean it’s time to propose! I think that I think there are more stages between casual/single and marriage.

OP posts:
thedevilinablackdress · 13/03/2026 14:06

catipuss · 13/03/2026 14:03

Depends how old you are. Currently young is anything under 50 for me.

Exactly, it all depends on in where you are looking at it from

FruAashild · 13/03/2026 14:04

SoUncertain · 13/03/2026 13:55

I've been wondering when does a young adult become an adult. Like in your 20s I would say you're fairly young, but 30s is just "adult", then 45ish is middle aged? Then over 60 is starting to be older adult, and over 70 is elderly?

I think it splits into 20s. So you're a child for the first 18 years of life, then a young adult in your 20s and 30s, middleaged in your 40s and 50s then old in your 70s and 70s and only elderly once you are in your 80s. Of course if we're all working into our late 60s then maybe the 'middleaged' bracket needs to move 5 to 10 years at least at the late end. My parents seemed to consider themselves middled aged until they were 70ish and in my mid 50s I have sympathy for that view.

Not that that has anything to do with being a responsible adult which some young adults are from being older teenagers and some elderly people never achieve.

catipuss · 13/03/2026 14:03

Depends how old you are. Currently young is anything under 50 for me.

OneOfEachPlease · 13/03/2026 14:02

IbizaToTheNorfolkBroads · 13/03/2026 13:58

I am the 3rd of 4 siblings. The age of the eldest is “old”, the age of the youngest is “young”. It’s continuously changing, and I will always be relatively young.

This is clearly the ideal way of looking at things! Unfortunately I am the eldest… 😂

OP posts:
OneOfEachPlease · 13/03/2026 14:01

I’m really surprised at 30! By 30 I had a very serious job, was married, had one child and was pregnant with the next… I’m really surprised that someone might think that someone at 29 is kind of still a kid!

OP posts:
zurigo · 13/03/2026 14:00

Young adult = under 30

IbizaToTheNorfolkBroads · 13/03/2026 13:58

I am the 3rd of 4 siblings. The age of the eldest is “old”, the age of the youngest is “young”. It’s continuously changing, and I will always be relatively young.

SoUncertain · 13/03/2026 13:55

I've been wondering when does a young adult become an adult. Like in your 20s I would say you're fairly young, but 30s is just "adult", then 45ish is middle aged? Then over 60 is starting to be older adult, and over 70 is elderly?

MidnightPatrol · 13/03/2026 13:55

I don’t know but I’ve noticed in political / economic discussion ‘the young’ now seem to be those under about 40.

Which is bizarre given you could
legitimately be a grandparent and at the top of your career by that point.