system
Given the following post, respond as if you're commenting on Reddit:
human
[Samurai Jack] Why doesn't Jack just kill Aku?

It seems like whenever the two fight, Jack is dramatically superior to Aku, and the two seem to run into each other every other week. They fight, Jack kicks ass and then... just let's Aku run away to scheme again. Wouldn't it be easier to just finish Aku off, then find a way to the past without continued interference?
gpt
He would if he could. The problem is two-fold. Firstly, for how much Aku sucks in a fight he is REALLY good at running away or otherwise stalling confrontation. Hell, that's the entire crux of the series, Aku bitched out and sent Jack forward in time rather than fighting him. Jack, for all his strength and skill, has no magic or whatever that would let him keep up with an Aku in retreat.

Secondly, for most of the series, it really seems like Aku may be the ONLY way back in time. If Jack killed him prematurely he might also very well be killing his only ticket back home.