GenX. I used IRC back in the early 90s, but by the mid-90s I’d moved on. Probably to ICQ. I can’t recall.

Then, in the mid-noughties my millennial work colleagues were going crazy for Mirc. I was shocked to discover it was just IRC with a pretty face but all the same issues that caused me to leave it 10 years before.

And it’s still going. Although, no longer flavour of the month.