Unless you subscribe to any one of most of the worlds' belief systems. Or unless your parents did and some of it sort of rubbed off on you. Or if you think law and order is important. But outside of that, yeah, of course, killing is completely neutral moral gray area. /s
I don't care to argue anymore semantics. You get what I'm saying and I get you. I just think that killing feels wrong for good reason, and that's a very popular opinion. Stop acting like it's a silly one.
Killing is wrong in general, but can be justified by circumstances.
It is never neutral. Only ever unacceptable or justified.
E.g. killing billions by making the world uninhabitable is unacceptable, whereas smashing an oil execs face in with a baseball bat is obviously justified.