To like Led Zep before, you kinda needed to be a rebel ... yes, at times some of the sounds of rock are frivolous three chords of nothingness but screaming. LedZep's music is pure genius. It stands the test of time. Listen to OMG Heart doing a respectful rendition of Stairway To Heaven. In retrospect, the flow of the song can now be considered as pure genius, there's thing much more you could add to it, can you. You can redo the song years from now and I don't think you could top the original arrangement and execution. To be able to think a great song through and through, execute it well, building up the crescendos, the guitar solos, the drums, oh the drums, and harmonising the screeching vocals at the end ... ecstasy!
Watch the whole tribute show cause The Foo Fighters and Lenny Kravitz were amazing too.