I was about to post exactly the same point.
'Guilty Pleasures'? What's all that about!
If you like something, you like it, why should other people's derision have any bearing on your personal taste? If you don't have the courage of your conviction, your issue is not with your music collection, it's with your perception of yourself as a thinking person with your own opinions and tastes.
I sing 'Saturday Night' with my CD player in my car at full volume, and if people think it's a naff song, I really couldn't care less - I love it, that's it.
I also have 'Ruff Mix', 'Live Is Life', 'Rivers Of Babylon', the list goes on and on.
Pah!