Wait. You're claiming that the goals chosen by your executive function just happen to correspond to a succession of enjoyable activities for the rest of your brain?

Nope. See my second comment, here for a better explanation of "love" in this context.

if a non-trivial part of what you do isn't boring or stressful,

If it were impossible to love something boring or stressful, a lot of relationships would be in jeopardy. ;-)