Abe: This time travel crap, just fries your brain like a egg.
Joe: This is my life now. I earned it. You had yours already. So why don't you do what old men do, and die?
Older Joe: I don't want to talk about time travel because if we start talking about it then we're going to be here all day talking about it, making diagrams with straws.
Joe: Time travel has not yet been invented. But thirty years from now, it will have been.
Seth: Ask yourself: who would I sacrifice for what's MINE?
Joe: I'm gonna fix this! I'm gonna find him, and I'm gonna kill him!
Answer: The current method works better because an assassin being present confirms the kill and the disposal of the body. If you sent someone back to Hiroshima or some other place you could never be sure the body wouldn't be found.
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