I agree with everything Firefoot has said.
(Though I thought it rather hard on Arwen - at the point when Aragorn laid down his life, she wasn't ready to go yet - only after he had died she saw that she couln't go on living on ME without him. Wouldn't it have been better for her to die by his side?)
One other person to take "a last journey" is Gimli !
He was 261 years old when he sailed West with Legolas. (which is about as old as Dwarves get when not prematurely killed, judging by the Line of the Dwarves of Erebor)
And his motive was probably to see Galadriel once more before he died.
btw I was really puzzled by the title of this thread!
(Croak??
I thought that was the sound frogs make... what connection is there with dying?)