It's just such a great medium. Fairly resilient, incredibly easy to use, compact, cheap ish.
And of course there's the heady dose of nostalgia for us old gits :)
If anyone has any recommendations I'd love to hear them. Top one from me has to be the BBC dramatised Lord of the Rings adaptation which I myself have been listening to off and on since I was around 5 or 6
However, I got "back" into cassettes recently with some new releases. Grabbed a FiiO CP-13, and while the quality still isn't great, with low wow and flutter it's perfectly serviceable. There's one thing that made it stand out and felt like we missed something that's now become a lost art - absolutely no delay between pressing play and music playing. No buffering from a streaming service, no megabytes pushed into RAM, no decoding, no FIFOs being filled before the signal exiting through a DAC.
And also .. there is absolutely no chance that you might unexpectedly hear an ad instead of a song.