After you die, your soul exists still. I'm not sure what happens to it, but, unless it's sealed, it exists. You could be revived with a forbidden technique, but someone else must be sacrificed. Also, you could become brainwashed to the controller's will so it's not all that's cracked up to be. So, I pretty much agree with what you're saying. I'm just applying a little context about my world. I'd be willing to sit down and exchange ideas with you over lunch!