"What was the worst musical decade?"
Fuck that's an arbitrary question.
The decade; 4720-10bc was probably pretty shit.
Mainstream music from every decade in the past century is generally fuckin embarrassing, yet simultaneously each decade yielded masterpieces.
Plus like most things, musical preferences are subjective,...so what's shit to you might be sick AF to me, and vice versa.
Maybe ya like Lisa Loeb's songs, whereas i can't stand that torturously soggy shite.
But i kinda like Dave Grohl's version of one of her annoying whinge fests, here's several examples of music i like,...
...i'd be surprised if anyone else here digs my sheit.