Should I be ashamed to love art that could be interpreted as pedophilic? [View All]

[Wat_Tyler]

This is one of my favourite records - Serge Gainsbourg's 'Histoire du Melody Nelson'. The orchestration of classical instruments and rock ones is extraordinary, perhaps unmatched outside of the work of George Martin and Robert Kirby. The songs are brilliantly constructed, and the production is perfect - it's a clear ancestor of Air's Moon Safari.

And yet, there's the subject matter. It's about the doomed love of a middle-aged French businessman for an underage English schoolgirl from Sunderland. It doesn't shy away from the implications - it takes an amoral stance, merely documenting the infatuation. In short, it is the rock and roll 'Lolita'. If one understands French well enough to take in the lyrics, it is really rather creepy.
Gainsbourg was well aware of all of this - he loved to provoke, to unsettle, to challenge. It's clear to me that he is not celebrating pedophilia, but is dealing with a taboo subject in order to raise disquieting questions for society. He is detaching himself from the moral implications, leaving them unanswered, leaving it to us to decide. This, one could either consider a cop-out, or a posed question. After all, this is a work about the love between a middle-aged man and a fifteen year old.
I guess what I'm asking is, should these moral concerns affect what is, musically, a wonderful work?