That's really cute, HTT, but it isn't really a case of having a heart or not. It comes down whether you believe that an addiction implies a person can be absolved of all blame for their actions.
As for the sympathy aspect. If I knew nothing about Gazza - just another bloke shortening his life and severing relationships because he's compelled to get wasted - yeah, he'd have my sympathy, sure. Unfortunately, it's hard for me to feel any degree for sympathy for someone who's had his opportunities and done what he's done.