You don't make a conscious decision to give up something like that, if it needs giving up.

I don't agree with this. I tend to make all other important decisions consciously. What's so special about this one? (ETA: Also, one potential way of giving it up is to edit my brain using some future technology. I think I definitely want to make that decision consciously.)

The rest of your comment seems to be saying that you're not yet convinced that anticipation is irrational. That's fair enough, but doesn't really address the main point of my post, which is that we regard some parts of our decision making process as having terminal values, and may decide to keep them (as luxuries, more or less) even if we come to believe that they no longer have positive instrumental value as decision subroutines.