As a fan of both manga and western comics, I've come to notice something very interesting regarding piracy. While both manga and western comics are readily available for pirating online, the opinion on piracy between fans of the two is vastly different. From personal experience, most manga fans don't care about piracy and readily do so. Comic fans however, for the most part seem to be vehemently against piracy of comics.
For the record, I'm on the anti-piracy side.