I feel the same about seeing other people's lists. I'm having a blast!
About 1/3 of people's lists I also love. About 1/3 are songs I see as ordinary -- but it makes an impact on me to see it on someone's all-time fav list, and I make a mental note of it (where I used to just ignore it, I listen closer). The last 1/3 are songs is cut in two: songs I've written off as not liking and songs I'd never heard before. What's interesting to me is most of the songs I don't like are songs from the late 70s/very early 80s (pre '83) -- and I always think "If I were born five years earlier, I'd probably have those same songs on my list".
The other funny thing is that if I were to play snippets of the 180+ songs I've listed so far for the people I hang out with, they probably wouldn't know 2/3rds of them. Most people I know would have listed Led Zeppelin 20 times by now, Godsmack 10 times, Beatles 10 times, Pearl Jam 10 times, AC/DC 10 times, Pink Floyd 5 times, Nirvana 10 times... basically the playlist of every rock station in America. A big collection of "see I like what everybody else likes, look how cool I am" songs. I like seeing pop songs, folk songs, punk songs, etc on people's lists here. I'm in good company because the people here like music, it's not just background noise - it's the soundtrack of our lives!
What I wish I saw more of is songs post-1995. There have been some amazing songs over the last 25 years. Every year since 2010 I've made a list of 100+ songs I like from that year, ranging from Enya (2015) to Carcass (2014) to Ice Cube (2019) to Ed Sheeran (2012/2015/2017/2019) to Prophets Of Rage (RATM + Public Enemy + Cypress Hill collab) (2016/2017/2018). And a bunch of new artists making great stuff too. Good music isn't the spotlight these days because what sells now is quirky goofy stupid shit like "Gangnam Style" "Black Beatles" "Bodak Yellow" "Old Town Road" "Achy Breaky 2" "Bad Guy (mumble, mumble, duh)" "WAP" and frickin "Baby Shark". The dumber the bigger these days it seems....