It was one of the only ways to find new stuff! Getting a new game magazine with a demo CD was was a very cool treat. I remember there was a TV show I’d watch that would promote new games too. Otherwise the only way to know what games existed was to go to the store and look at the pictures on the giant cardboard boxes they packaged floppy disks in (and later CDs).
I distinctly remember doing that for Quake. Going into the store and getting the demo hard disk to take home and install on DOS. That started years of FPS playing…
I actually get more enjoyment these days reading about games than playing them. Or at least I spend more time reading about them than playing them. For instance, reading an issue of Retro Gamer magazine is highly pleasurable. Picking up a retro game that I didn't actually play as a kid is usually less so.