There's a huge amount of survivor bias when thinking about old music. All the crap that never made it far is mostly lost by now; what's remembered and what's on the 80s playlist is basically the top pick from a whole decade, readily discovered for you and sprinkled with nostalgia from your childhood.

Also, in different decades, different styles were mainstream. Today you can find music for any genre that was popular in any decade and the best of it will also sound great; it's just not present everywhere or readily picked out for you. It's quite likely that you don't like the decade, you simply like the music style and didn't find the niche that is still producing it.