That's just it, right? In Plotinus' schema, you can't not strive towards the Good—it is the only thing a being is capable of. Put another way, all we can do is Love. Now, one may lack with capacity and wisdom to strive for the highest Good of which they're capable, but that doesn't mean they're Evil, it simply means that they got turned around somewhere and lack the senses to see that they could be doing much Better.

I'm repeatedly struck by the kind nature that Plotinus' work exhibits. Socrates comes across with carefully-cultivated provocativeness; Plato reads like he's by far the smartest person in the room and he knows it; Sallustius reads like he's an exasperated schoolteacher patiently trying to get the lesson across to willful students (Sunzi always struck me this way, too); but while Plotinus is very, very smart, he despises this as a "necessary evil" and comes across gentle and sweet. The only other major work I've read that exudes the same character is Laozi.