Our evolutionarily derived pleasure and pain signals are still useful even if they are noisy. They remain useful because the noise is systemic and can be compensated for. Eg, we loved calories back then because they were scarce then but they aren’t now; we can note this and compensate. However, we still live a ~20% oxygen environment and going without breathing is bad for us, so we should listen to our lung’s signals when they tell us to breathe.
Evolutionary signals are useful inasmuch as they retain the same context as they had in the evolutionary environment. In other words we’re adaptation executors instead of fitness maximizers.
Our evolutionarily derived pleasure and pain signals are still useful even if they are noisy. They remain useful because the noise is systemic and can be compensated for. Eg, we loved calories back then because they were scarce then but they aren’t now; we can note this and compensate. However, we still live a ~20% oxygen environment and going without breathing is bad for us, so we should listen to our lung’s signals when they tell us to breathe.