If you were to reanimate a dead person (not a zombie situation), what do you imagine they would say of death? Religious imagery excluded.
Do you think they would be offended you disturbed them? Would they want to live again?
Would they just be disoriented?

I suppose the safer, more ethical version of this is to reanimate someone who was cryogenically frozen. Although, I imagine they would be exuberant in expectation of a cure to the malady leading to their decision to be frozen.