Earlier quoted context omitted.
An economists perspective would be that your utility function can be whatever you want. According to what you said above, you would be minimizing regret, which is an optimization goal (although it sounds overly dry in that context). Blooms point is that when we take on the emotions of someone else, it has the ability to override our rational decision making and that rational decisions tend to lead to objectively bett…
There's probably some truth to this, and I suppose you can define "objectively better" as "maximizing your optimization goal" or "minimizing the bad stuff" or something, quantifying that however you want. That said, I'm not 100% convinced that my "rational brain" actually is better at making decisions that minimize regret than just relying on emotions. My rational brain is very good at rationalizing shit to where I c…
We typically make decisions with our emotional mind, and justify it with our rational mind after the fact. I believe Bloom is in the camp that we can override that initial emotional impulse, but there are people who disagree with him. In any event, if the end goal is emotional ("minimize regret") I'm not sure there's much to be gained by bringing the rational into it.
The biggest takeaway I had from his book is that being overly emotionally empathetic can make us biased and lose out on the bigger picture, like making one focused on the short-term wants at the cost of longer-term needs. (There are other biased aspects, like the fact that we tend to empathize more with people who are similar to us, that can lead to obvious less-than-great outcomes.)