Why did Legolas set sail for the Grey Havens only after Aragorn's death?

[Anguirel]

Folwren, I'd forgotten that picture existed but it was definitely at the back of my mind. Probably the single finest argument for a dark Legolas, and the bow is pretty like kickass as well isn't it...reminds me, in a respectful manner of course, of that vaguely unintentionally homoerotic passage somewhere in the Prof's notes where he compares Legolas to "a young tree"...