A reason for saving Writing for a later generation, and a trick for making use of it: Early on, at least some of your non-immortals are going to be grinding away on painting. Add Writing to that, and you've got a children's book author. Keep at it long enough and you can fill a bookshelf with nice, short children's books that a Bookworm can take to the library and read at record speed. Each book read, regardless of length, boosts your writing speed, so a) the children's book author can end up writing very, very fast if all they do is read each of their own books as it comes in the mail, and b) a later Writing immortal can start with blazing speed by reading all the books left behind by their ancestor, which will make it that much less time-consuming to write the more valuable books needed to supermax the skill or the writing career (which also take longer to read).