I haven't gone through it all yet, but one thing that I generally like is how eclectic your collection is.
My dad was constantly playing Beach Boys. I put on a song once in a while to remind me of him and his horrible singing voice. (Haha)
But I also remember being a kid and seeing Iron Maidens Eddie and thinking how bad ass he was. My uncle was a huge fan and would always spin their music.
Lots of punk... but also not afraid to branch out and appreciate great musicians. I've seen a few large collections, but they were kinda just in one lane as if all this other wonderful music didn't exist.
Yeah, I don't try to block myself into one singular focus of genre. I mainly go for punk and new wave stuff, but I also like 60s soul, doo wop, 20s-30s country and blues, jazz, Brazilian music and all other types of genres. I've been digging for 7 years now and the discoveries I've made would have never happened without record collecting (like how else would I learn about New Zealand indie rock without digging through discogs to find out about it?)