No MMORPG has ever hooked me like EQ did. I don't know what the magic behind it was but I was addicted to EQ. I think it was the whole group and community aspect. Too many of these games are so fast paced and solo oriented that they bore me so quickly.
EQ was so slow paced but it felt right, you sat in an area and combated the enemies while having time to converse to your group members about other things.