I have been digitizing my cassettes recorded in the 70s - 80s. I recorded a lot of vinyl using a Nakamichi 680ZX, DBX and Maxell Metaxial (metal) C90 tape, and they still sound a good as the day I recorded them.
I'm converting them because I still have the vinyl, but I'm not sure if it sounds the same. Furthermore, I played the vinyl a lot and through wear the vinyl my not sound the same. So I would record all my vinyl as I purchased it ... new. I considered it a way of archiving my collection. I know no tape system will compare to vinyl, but it was the best I had at the time.
To bring the music back, I'm digitizing the tape with the Nakamichi 680ZX, DBX and a Korg DS-DAC-R10 with Audiogate software. Store them all on a flash drive and play them back on a Nvidia Shield Pro TV using the Kodi App.
Why not just hook the Nakamichi/DBX into my AVR and play the tapes, you may ask. Well, the one thing I didn't like about tapes was I couldn't listen to a selection of songs. I had to play the tape linearly or fast-forward to the tune I wanted to hear.