Yes, welcome! I'm pretty new around here, too...and my story is much like yours in fact. We're probably about the same age, for our dads to have gear like that. As a music-loving teen, I had a couple boomboxes in the early 80s (first was a Sanyo M9903K, a low-level stereo box that had shortwave)...but I always coveted a friend's higher-end, bigger, and much better-sounding (my best guess from memory of what it looked like is an RX-5500). I started reading about boombox collecting when I saw an article in the newspaper about a local musician here in Baltimore who was/is into it, posing with his collection, talking about taking them out in public etc (this was 5-10 years ago) and I decided I had the $$ for an RX-5500 at this stage of my life so why not?
Usually, when I'm listening to music these days, it's via stuff I've downloaded on Amazon Music on my iPhone, and thru headphones...but there are times when you just want to hear it thru speakers, you know? (like the big job I've got ahead of me, cleaning out the basement ....I figure it'll be much more fun with a boombox booming in the background than the usual headphones).