This reminds me about the supposed irrationality of emotion. An old popular view pits rationality against emotion: The more rational you are, the less emotion rules decisions, the better. The fallacy I see in this is that a rational human would acknowledge her/his humanity, and judge in agreement with empirical evidence that systematically suppressing emotion leads to certain psychoses and emotional disorders that will, ultimately, make her/him less rational. That is, to be more rational, one must allow herself to be a little irrational once in a while.

In agreement, the cognitive cost of being rational all the time is too high, and is, after all is done, irrational.