Venomous Nostalgia?

Why does watching Cobra Kai make my heart hurt?  Like anybody, I like a dose of nostalgia, even if it's for a time and place that never existed for me.  Let's be honest, most '80s entertainment was for a time and place that existed for nobody.  Still, I typically find that stuff entertaining enough.

Stranger Things doesn't depress me.  None of the other flashback shows do.  Something about Cobra Kai hits my subconscious the wrong way.  I don't know what it is.

It's not the bad writing.  All of those shows are like that.  There's something else.

I'll just be passively listening to it while doing something else, and suddenly, I can't take it anymore.  I have to turn it off.  Whatever it was isn't obvious.

Eventually, I'll turn it back on.  Maybe the next day.  Anyway, it finds a way back.