Maybe because what was recorded on Vinyl never matched their live show. I saw Led Zep twice and both times I was disapointed,Bonham and Page were to drunk to rock both times. Led Zep to me was a band I loved, and still do. Each album was a masterpiece up to 4 and then they jumped the shark.If Physical Graffetti had just been one album it could have been in that catagory too."Stairway to Heaven" was not the first initial single off that album and when i first played it and stumbled on to that little nugget at the end of side one I was in awe. Then it started being played on the hour every hour on FM/ AM and now I can't even stand to listen to it anymore.I still listen too them when i want to get it going but Led Zep influenced my life more than the Beatles and their first album rocked my world..