I started buying CDs in the early 90s when it started getting harder to buy anything on vinyl anymore. In ~1994ish, someone broke into my car and stole my big folder of CDs out of the back. It was one of those gigantic ones with like 1000 CDs in it. From that point on, I decided I would never buy a CD when I could buy a record instead. I purchased a MiniDisc player and I made MiniDiscs and Cassettes of all my records to listen to in the car.
This was back before you could reliably get music online, so the realistic choice was vinyl or CD still. Once the Napster revolution happened and ppl started illegally downloading music, I had the option of just doing that, but I'd still need to burn CDs or make tapes to listen in the car, and the quality of the MP3s in those days usually sucked rocks. Also, I never really felt comfortable stealing music. I'm not trying to judge anyone else, I just won't do it because I don't feel comfortable. Even once Soul Seek came out and you could get HQ files, and there were tons of password protected servers where you could safely DL thousands of albums in HQ for free, I never jumped on board because I didn't want to do it.
To this day, I buy records on vinyl, and sometimes on cassette when possible. If I have to, I buy digital and then make a cassette of it to listen to in the car.
I buy digital files off of Bandcamp usually.
I actually used to always bring cassettes with me on the plane, but it became kind of a PITA when I was going through TSA, so I stopped doing it. I'll still bring cassettes with me if I'm going on a long vacation.
Example of my Sony WM-D6C hooked up to a pair of L-R BT speakers via the aux input (vacation setup):
