“Is there such a thing as a necessary evil?”
I opened up this can of worms by referring to systematic theology as a necessary evil a while back, so obviously I think there is. From the perspective of humanity, “necessary evils” are undesirable choices that may confront us for no reason we can discern, but more often come about when we have already departed from the word of God in some way, and no longer have the same menu of options available to us as we would have had prior to sinning.
Such choices are “evils” not in the sense that choosing them is in itself always a wicked act, but in the biblical sense, where all possible outcomes of our choices are varying degrees of disagreeable to the person choosing. The Hebrew word for “evil” may refer to either sin or simply misfortune.