Or, what is usable/unusable or good/bad anyway? Fear may be undesirable, and aggression has major shortcomings, but the point is moot. They are here to stay, an

Or, what is usable/unusable or good/bad anyway? Fear may be undesirable, and aggression has major shortcomings, but the point is moot. They are here to stay, and they will be both desirable and undesirable at some point. Trying to assess the utility of something as fleeting as emotions is a silly thing to do, IMO.