That would have been Slackware, which in those days came on a stack of 3.5" floppy disks. So early 90's (and hence I was in my mid-30s) but I was still mainly using Windows 3.1 and Trumpet Winsock to connect to the Internet.
I think the first time I really took it seriously was in the mid 90's with Debian, a copy of which was posted to me, on CD-ROM I think, by Ian Murdock himself (back in the days when he was still with Debra π).
Now in my sixties and still CF. In my thirties the only real down side was the loss (largely) of friends who had chosen to have children so could now no longer come out to play.
But life was good, on the whole.
And still is.