Earlier quoted context omitted.
Being reachable only from a PC at home… man. Now that I miss. The whole lifestyle of having a clear distinction between being at the computer and not. Status messages for a time when “away” was a state of being you ever were . Coming back to see whether your crush had messaged you. Simpler times for sure. Before we even had “wi-fi!”
I started writing an essay about this topic. I am one of those nostalgics by the old internet. I thought it was the aesthetic (geocities, etc), but after giving it a lot of thought, that wasn't. It was that your life (all of us) was "offline by default". We lived offline and then we connect to the internet for a few minutes, hours, whatever. But you lived your life offline. We attended concerts, took photos, recorded…
You chose the client you used to connect with. Noobs used the official ICQ adware and you used some 1337 open source client on Linux that could handle both ICQ and Jabber. But you could talk to them on the same platform.
Where are the alternative WhatsApp clients? Or iMessage? Or Telegram? You can't talk to anyone anymore unless you submit to one of a few megacorps and run their software.