As much as I hate to contribute to any country music bashing, I have to say that Kenny Rogers had some doozies. Coward of the County and Ruby, Don't Take Your Love to Town are so horrible I can't help but laugh...and then I feel bad.
My dad used to play a lot of Kenny Rogers during my formative years. I LOVE those songs!
I can't really think of any mainstream, middle-of-the-road songs that I think are really bad. I detest any song in which people swear or shout over the music, things like that. Rap and all that kind - it all sounds like noise to me.
And I can't even bring myself to dislike "MacArthur Park" - not when Weird Al did such a GREAT parody of it:
"Jurassic Park is frightening in the dark
All the dinosaurs are running wild
Someone shut the fence off in the rain
I admit it's kinda eerie
But this proves my chaos theory
And I don't think I'll be coming back again