Casual/Hardcore just used to represent styles of play, now it's some pointless civil war fought by groups that have no self esteem and can only find a feeling of superiority through constantly declaring the other-side to be inferior. There are "casual" players who put in 60 hours a week all the while fuming about hardcore players, there are hardcore players who finish up their server first kill and only raid one night a week after having all the hardmode content on farm.
The idea that there aren't "casuals" who played Ultima Online or EVE is ridiculous. You can play anything hardcore OR casual. It's a ridiculous line in the sand to draw and only people who don't know what they're talking about it do it.