If camping three kings is all you do in FFXI, then yes it would be rather depressing. How fortunate that there are other things to do in the game. You can get rank 10 in all three nations, you can fight Maat on 15 jobs to get a Maat's Cap, you can chose an Adventuring Fellow and level him/her to 65, you can complete hundreds of unique quests that tie into the storylines of the nations and the people that dwell in them.
There is more to do in a game that to just kill X monster for Y armor. Sometimes people forget that they need to stop and smell the roses every once in a while.
http://i4.photobucket.com/albums/y14...imus/flags.jpg
http://i4.photobucket.com/albums/y14...monHarness.jpg
I may not enjoy every aspect of FFXI, but I find ways to amuse myself.