I have a strange relationship with that kind of 70s/80s rock/hair metal, because when I was like 13 and old enough to start buying my own CDs and figured out how to use Limewire and Kazaa, I went through a phase where I listened to a lot of that stuff, then my tastes moved on to other things and I couldn't help but consider KISS, Motley Crue, Poison, etc. as cringy and cheesy. Only in recent years can I go back and hear those songs again and appreciate that some of them are decent in terms of pop-oriented music masquerading as rock. Like when Eddie Van Halen died I went back and listened to most of their albums again after not having really listened to them in any depth about 15-20 years, and I was impressed at how it all held up and was getting into it again.
In the end, I think it's a genre that I'm kind of past and wouldn't really seek out, but if it comes on the radio I can appreciate the tunes without feeling the cringe factor I had for a while.
Music tastes are interesting, because you'd think it would be an objective kind of thing like "X sounds good to my ear, Y sounds bad", but there's way more social trappings around it - especially when you're an impressionable teenager. It's as much a social construction as a hard-wired auditory thing. You shy away from some bands or genres because there's a stigma against it in your social group (let's admit it, nsync and backstreet boys put out some tremendous pop jams but you couldn't say that on the schoolyard in the late 90s or they'd question your masculinity and sexual preferences), and attach yourself to other ones for clout even if you don't actually like them. I bought Led Zeppelin albums when I was 15 because you're supposed to because they're the most respected band in the whole hard rock community and such. I like a few of their songs, but overall, I don't really care for them and more of it was just unpleasant droning blues rock with convoluted Tolkien references in the lyrics and I didn't really like listening to them. Same with Rush, I get they're all geniuses trained in advanced music theory but aside from a couple songs it doesn't appeal to me. But you're expected to like those kinds of bands if you're a "real" rock fan, etc.
All I know in this stage in life is that my music tastes shift every 4-5 years or so. Like I'll devour some subgenre in full and move on to the next thing, while occasionally going back to them for spells and generally falling back on 80s/90s pop as a default that I always like. And I don't speak in absolutes. For example, I've never been a country fan, but that doesn't mean there aren't some country songs that I think are catchy, etc.