I was using a cassette player as late as 2001... bought a Panasonic in 1999 for $90 to replace a mid 90s model Sony Walkman that still worked but the Panasonic was ultrathin and had more features than you could shake a stick at, but it wasn't very good durability wise so I found out, but I still preferred cassettes to the Sony Discman my parents bought for my siblings and I to use in the mid 90s. Preferred making my own mixes, liked the option of listening to the radio, and the battery life was much much better with the cassette players, until I bought a Panasonic CD Player in 2001 that had 50 hour battery life and I got a new CD Burner so I could make my own mixes. No more spending hours ripping CDs to cassettes lol.
I still have lots of cassettes lying around. Old mixes and karaoke outings we recorded back in the days...