For me, I was tired of the bullshit pop/fake glam metal/boring '80s rock that was popular when I was growing up. Rock/soul/funk from the late '60s and early '70s felt more authentic to me, especially bands like the Grateful Dead who were trying to do something different every night on stage.Eh, I'm just a late gen boomer who ended up hating most boomer culture, including especially the giant nostalgia wave that overwhelmed everything between my ages of ~15-35, plus all things hippie. Seeing people younger than me enjoy that stuff is a mild irritant because it disrupts my illusion that mainline boomer shit is shit and everyone sane knows it. Some of the people involved in this music convo are in that category. I made a joke.
I never understood how younger generations gravitated to the '80s and '90s, because to my ears, other than punk, grunge and some hip hop, it all sucked.