Well, Hollywood normally does what they figure will market best, and what is that? Generally speaking, it's a primitive and totally predictable cliche with cardboard "good guys" and "bad guys". Occasionally, though, Hollywood actually manages to produce an original movie. Or at least, some director does, anyway.

There is, indeed, no "greatest decade for music" and there never will be. It's a matter of personal taste, that's all, and personal taste is a direct result of one's personal experience, specially in the formative years of life. My Dad loved big band jazz, for example. It was the popular music of his youth. I didn't like it much at all, I liked the popular music of my youth which happened to be folk and rock. ;-) That's how it usually goes.