It's all just opinion's, man. Your gratuitous use of the terms druggie and drug abuser, while technically true, adds nothing. It appears, IMHO, that it's an attempt to obviate the complimentary parts of your post (like a backhanded compliment). Ledger's death was a stupid thing to have happen and he was stupid to remove himself from his daughter's life even if accidentally, but that doesn't change a brilliant performance on the screen.
Oh, and don't give me that crap like you've been spanked by a moderator. That's not what this is about, so don't pout.