I will say it again I LOVE Kes! And for what it's worth I would have rather seen almost any of the other characters (Harry, Tuvok, Chekotay, B'Elanna, the EMH, Neelix) go than her.
And YEOP if Tuvix had stayed Tuvix Kes would have been forced to sleep with a rape whistle, mace and a phaser next to her bed, possibly wearing those metal underoos from "Robin Hood- Prince of Thieves" for good measure.
However despite finding Tuvix to be a slimy smarmy git and far more obnoxious than the sum of his parts I am firmly in the "Tuvix should have been allowed to stay fused" camp. Let me explain.
The way I see it, Tuvok and Neelix were not "gone" or "dead" to me they *were* Tuvix, just like taking apart two Lego towers and using the pieces to construct one. Nothing was gone, nothing lost just rearranged.
As such Tuvix, in my opinion at least, spoke for Tuvok and Neelix when he begged not to split him, because Tuvok and Neelix had no awareness beyond or seperate from Tuvix, so his opinion were also theirs by default.