There...I've said it. I'm your typical fag who loves musicals, and I somewhat liked the original book (but feel it's a bit overrated), and I like many of the people involved with Wicked, but the music is really shitty.
And the shittiest song in the show is the most popular song, Defying Gravity, which is an anthem for many a young, impressionable, lgbt theater-goer. It's noble sentiments fail to disguise the essential, irritating turgid crappiness of that song.
But I still love Kristin Chenowith. And, I'm still envious that Idina Menzel gets to sleep with Taye Diggs WHENEVER she wants...