Magick as I see it is simply a tool manipulated by the caster. Example is a hammer which is useful in construction work but also a good blunt force weapon. The only thing that makes a spell bad is the moral standards the one judging it has.
Necromancy involves talking to older spirits which have lived in the physical plane and experienced death. They have yet to come back so they retain all knowledge they have gained over their life span. I always saw the dead and it doesn't bother me to talk with them either as a corpse or whole human.