As a player of the game for over 2 years, and now a member of the immortal community - I have truly enjoyed every moment of it.
Realms of Despair has something for every one. Guilds, Orders, quests, leveling, playerkilling, roleplay, mobkilling and lots of adventure. Not to mention that there are over 20,000 player files, and it is not unusual to see over 400 people online at one time.
Whatever niche you chose to carve for yourself can be filled by the many different aspects and people within the Realms of Despair.