Someone said to me that the piece about "growing up" was a bit prescriptive -- "this is how you ought to behave" -- and I guess that's fair. It does represent the author's opinion, and so what they're really saying is, "this is what I like in a person". I posted it because I share that author's tastes.
It's a subtle point, though. I felt that what the author was saying was, for example, not just "everyone should always be on time", to which one might respond, "are not other things sometimes more important?". What they were pointing to, specifically with the heading about "now you're over 25", is the syndrome where some people exhibit helplessness or thoughtlessness: no money, always late, inconveniencing other people, "crowd surfing" (i.e. constantly relying on friends for rescues), as a way of affirming eternal childhood or rebelling against authority. There are good things to be retained from childhood, but those aren't them. And there are effective ways of confronting authority, but those aren't them. You can't bring down the government by not cleaning your teeth.
It's not so much the specific examples of behaviour mentioned, though I liked those. It's the willingness to admit that what you do always and inevitably affects other people, and so you are not free to act as you choose. You have to accept that responsibility. And that's "growing up". And to me, yes, I believe that is a truth and not just an opinion.
