An important one that often that gets lost in "drone strikes bad" internet debating: the cost of the alternative.

If a nation is conducting drone strikes on another nation's territory, the alternative is usually conventional forces at scale on the ground*.

As the Iraq occupation showed, conventional ground forces at scale cause an even larger number of civilian deaths.

So drone strikes, if kinetic intervention is pre-decided, are a less-bad option from a civilian casualty perspective.

* Granted, there might be a decision not to deploy conventional forces because of the risk / cost, but if there are regular drone strikes, it feels like the aggressor country is past that Rubicon.