Hi there, I love you!!! Anyway, yes, nice to know I am not going mad, either. Reading the first few pages of this thread was disturbing. But not any more disturbing than watching the news or in general getting the sense of how puritan the Western civilization has become since the 60s and the 70s. It's like all of the emancipation (I prefer to think of it as enlightenment, btw) progress we've made has become pages of the history books again. Total regression. Yes, today we may have some really blatant lyrics in certain genres of music, but I don't look to the 70s and bands like Zep, Stones etc. for an accumulation of F-words so much as Freedom. And that zeitgeist is just gone, IMO. Anyway, so I'm a guy, I'm straight (though it's just genetic in my case and nothing that God prescribed) and no, I've never been bothered by Zep's stage looks or anything Robert wore. It was liberation art, driving a battering ram through the society's norms (like so many other artists from that era, as others in this thread have already noted). As much as I like Zep's music, I don't think I would have liked them nearly as much without the sexed-up image.
What don't I like? Would be nice to have more quality multi-track live recordings, and more professional videos for sure. Otherwise, it was perfect even when they were indulgently tripping their way through half-hour versions of MD, NQ, noise solos etc. And that was liberation art as well.
My 2c.