I was hardcore EQ1 but what killed it for me was always looking for a healer. I spent too much wasted time looking for a healer to do any group runs. I'm not ever going to put myself through that crap again. As a wizard I could quad kill in a few places but that got old as wizard and druids were always fighting for the few spots that you could quad kill.
I did EQ for 5 years and right around PoP and the next expansion, forget what the name, killed it for me because you needed a pretty buff out tank to even get through the dungeons. My guild was not super hardcore and we never made it past plains of fire so only our main tank and off tank had enough gear to get through so everyone was fighting for them to get in there group.
Then I got in bata for wow had much more fun because I could solo.