Have you listened to songs such as 'The Millionaire Waltz', 'White Man' and 'Flick of the Wrist'?
Not only are they musically fantastic, but the lyrics are equally brilliant. I can understand that some of their songs might not be to everyone's taste, but their songs changed over time and more importantly, they covered a vast range of genres. So although there may be some songs you don't like, there's there's bound to be at least one song in an album that is suited to your particular taste.
I personally prefer the unconventional Queen songs now. Before I became I full on Queen fan (bordering on self-confessed aficionado), I dismissed the less well-known Queen songs as perhaps a little odd, but I often find the more you listen to them, the more you understand and appreciate the music.
'My Fairy King' is a key example of this- the first time a listened to it I was like wtf, but now I think the instrumentation and lyrics are absolute genius. I mean, I didn't get it at first, but the song is practically a poem, about how human corruption has tainted the purity and perfection of the world (well, this is my interpretation anyway)- you wouldn't get this upon a first listen.
Obviously, I'm going to be a bit bias, but I think it's worth reconsidering your opinion on Queen albums. Granted, some are better than others, but I certainly wouldn't generalize all of their albums as "bad".