system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] What is Lex Luthor's ultimate goal?

Reading Final Crisis and he could kill Superman but he would rather fight with him against Darksied.
gpt
It depends on your interpritation but most people (including me) believe he wants to be both the Savior of mankind and to be beloved by all for doing so. He can't do that with Superman around because he fills that niche perfectly, thus his irrational hatred of Superman. 

During Final Crisis he could of killed Superman, but then Darkseid would of won. And people can't be cheering his name if everyone is Darkseid. Temporailiy teaming up with Superman is the logical choice. He even says "I'll take all of the credit."