User blog comment:FairyRaven/Fairy Tail Chapter 357: The Nine Demon Gates, Review and Commentary/@comment-112.208.2.201-20131025102910/@comment-7418318-20131025103910

We already saw what a serious threat Tartaros is, so killing Laxus would serve no purpose at this point of the story.

Now if he died in the final battle of the arc with his death being a meaningful contribution toward victory, I'd be fine with him dying, but a meaningless death in the middle of nowhere just to hammer an already proofen fact home even more? No thank you.