The Impotence of Evil
One of the reasons why rational egoism's world-view is basically benevolent is that evil, as the concept is understood here, is ultimately and fundamentally powerless.

Traditionally, evil has often been thought of as some kind of disembodied force, not merely operating against good, but acting independently of it through a vested power of its own. From egoism's perspective, evil is no such mystical force. Rather, evil (in its primary sense) pertains to self-destructive actions and to the failure to take positive actions necessary to one's life and well-being. By extension we may also speak of beliefs leading to such self-destructive actions as "evil." Occasionally, we may even apply the term to persons who habitually engage in such actions—although, as we shall see later, the term is apposite only to actions that result from deliberate evasion rather than honest error. As observed previously, however, the primary function of ethics is to discover what is good for one's life, and not merely to condemn what is destructive to it. This function is reflected in egoistic philosophy, whose primary focus is on the determination of proper actions, rather than on the condemnation of individuals.