Seventies music runs a wide gamut from syrupy Pop cheese, through Disco, aggressive garage and Punk Rock to the complexities of Prog and iconoclasts such as Frank Zappa.
Take the recordings of David Bowie. If you opine, "I don't like Bowie. He does ____________ (fill in the blank)." Chances are, on his next album, he does the exact opposite. All of your initial prejudices are confounded.
It should go without saying that I am drawn to this forum by an interest in guitars, basses, pickups, amplification and so forth. I also happen to be interested in synthesizers. The Nineteen Seventies was pretty much the peak of analogue synthesizer development, string ensemble instruments and their ilk. Most of what has come since has been a pale imitation.
Another positive thing to be said for Seventies music is that there was a freedom afforded to artistes by record companies that does not exist today. Acts such as Can simply would not have been given a break in the twenty first century.