Well, I'm a metalhead myself, so Punk usually doesn't manifest itself in many appealing ways to me (see Beasty Boys). Furtheremore, it'd help if you clarified exactly what "hardcore" punk is? Do you mean like Talking Heads? Or would you rather that it be exemplified by the riffs and tones of The Mighty Mighty Bosstones?
In another point complete, why do people rag so much on modern music? Every person who claims that they are a hardcore fan of [insert genre here], also goes out of their way to make a big deal about how modern bands have butchered the genre, and all the new sub-genres that have come to be are absolute shite and a disgrace to the name of [genre name here].
Greenday is okay in moderation, MCR is likewise, Nu Metal kicks some serious ass, and anybody who badmouths songs by Alanis Morrisette is dead to me. Not sure where that last one fits into this thread, but I'm sick of people saying that she's a terrible artist just because she was writing meaningful lyrics...