For me, it's the 70s, even tho it's the decade when the axe fell for the global left, the eclectic fashions, the vibes, the simultaneous sense of cultural defiance, despair, emerging technologies and building dread of an unknowable future that we now know so well, gives it an almost otherworldly quality other decades lack
Also best decade for hair
ngl, the one objectively good thing the 80s gave us was pastel suits. Combine that with synth pop and a mountain of coke :stalin-feels-good:
The 80s also gave us Goth
And post punk. The 80s gave us plenty of great things, I just had to zero in on the suits