70's was the best because it was fresh mixture of everything that came before it but once people started running out of ideas on that mixture of sounds, you get the 80's. The 80's had some heat but alot of the downfall in sounds were because of the introduction of synthetic instruments. They often sounded cheap as fuk IMO
also a big part of what made popular music from the 60's and 70's was the obvious Blues roots/influence. The best Rock was all blues-based to some degree but it was lessended in the 80's.
It was the HipHop generation of sampling and the early EDM music of the Chicago/Detroit and NYC that took the mixture of sampling and drum machines and injected "soul" and creativity back into the music
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