> Which city?

I prefer not to disclose it (somewhere in Central Europe), but there have been extensive discussions here on HN about how many modern cities have become increasingly hostile to children because their design prioritizes cars over walkability and accessible public spaces. The concerns I am referring to stem directly from that context.

> That depends on where you are and what network you are using.

In my country, prepaid SIM cards still charge per call and per SMS. The alternative is a monthly plan, which at least for young people without their own income was not really financially practical. Back then, even adults did not use these monthly plans, if it was even available at the time here.

> I was also a kid 25 years ago and we absolutely sent emails.

That is interesting, because email never became a popular medium among kids where I grew up. What was popular, however, were synchronous, real-time forms of communication: in-game chat, ICQ, and especially MSN Messenger (I miss those days), and a local web-based chat platform that many of us used. Email, by contrast, felt slow, so we only used it occasionally, for example, when I used it to check up on someone to finally get on Yahoo Chat.

Do not get me wrong, when I was a kid we were always outside, hanging out in abandoned buildings that are long gone now, for example, and I barely see any kids running outside together in groups like we used to. They are probably inside playing games or something. :P

(There are still many playgrounds where you can see very young children playing with their parents. But they are way too young to use a computer or to be left alone, even, so I am not referring to them.)

May I ask where you are from? The contrast is quite interesting, and I would like to hear more.