Good grief....

This makes my brain itch more than philosophy ever could, Rev.Rock

But as we already decided, a little brain itch is good now and then. (Or even, a lot...)
Hmm.. let's see. If I had to do without the music from one of those two decades, I'd have to choose...

I suppose I'd go with the 60's.

Cream, The Doors, Jimi Hendrix, all that great Motown and soul music, free jazz,
AND 90% of The Beatles... too much to sacrifice.