Why didnt Celeborn go with......

[Duncariel]

maybe celeborn was there to look after the galadhrim who didn't go to valinor with galadriel.

This was my first thought when I read the books for the third or fourth time. I figure that even though elves are immortal and often brighter than us mortals, they still need a leader. Kinda like sheep without a shepherd, only different.

He may have needed time to set Lorien in order before leaving, because of the damage done to it in the war. My other theory is that he may have had a part in weeding out the remnants of orcs and bad people that were left after the fall of Sauron. This, of course, is just one of the things that kind of pops into my mind without warning, so if I'm wrong, disregard all of it.