I don't like them!
To be clear, I don't actively _dislike_ them, I've just never really listened to them or felt any interest in doing so, so I can't say I _like_ them. I just can't be bothered, is all. If I were going to make an effort to listen to something because others like it, I'd listen to classical music or Jazz or something else high-status.
They are one of those bands I associate with people who got their music tastes from older siblings. All my life I've run into people younger than me who have the musical tastes of someone older than me and I always wonder what's going on there. Why would anyone who hit their teens after 1980, say, want to listen to Led Zeppelin?
I've concluded it simply comes down to birth order, and whether you have older siblings. Either that or being from 'the provinces' (people from outside the larger cites often seem to have the tastes and attitudes of a generation earlier than their age would imply, which is why they like the likes of Led Zeppelin - the same reason why, much more problematically, they can use unfortunately outdated terminology for minority groups, even when they aren't intending to be offensive).
Also I associate Led Zeppelin with exploitative sexual behaviour, but, then again, if I were being consistent that would rule out 90% of rock music from any era.
For some reason, disliking the politics and behaviour of an artist becomes far more of a factor if you know about it before you encounter their work. For example, I was put off Eric Clapton by his racism long before I ever heard his music, but Morrissey is clearly every bit as bad, if not worse, but I didn't know that till long after listening to The Smiths. It's like a vaccine, I suppose - discovering such things first, makes you resistant to someone's work forever.