In your comparison, I think you're getting tired because you need to reason through syntax writing which you have not done in a while, its more akin to going to gym than it is to "withdrawl". Having to reason through syntax for writing is going to be a muscle memory thing which AI will reduce, but its not really the most valuable skill of programming. Reading, comprehension, ownership, and your internal mental model of programming tasks are without a doubt the most important aspect of our work.