11. The Infinity Gauntlet Destroys All
At some point in Avengers: Infinity War, it's a safe bet that Thanos will get his hands on each of the Infinity Stones, and the Mad Titan having a fully powered up Infinity Gauntlet demands some sort of show of power. Remember that we're talking about a weapon which can pretty much remake reality or wipe out entire galaxies, so what real chance do The Avengers - and the Guardians Of The Galaxy for that matter - stand against such a force? With the Infinity Gauntlet, Thanos will be more powerful than all of these heroes combined, hence why he should use his newfound weapon to wipe them out. All of them! OK, so Thanos making each and every one of Earth's Mightiest Heroes explode like those heads at the end of Kingsman: The Secret Service will make Avengers: Infinity War a very short movie and may be a tad extreme. However, you know who would make for an easy target? Those loveable Guardians Of The Galaxy! Thanos wiping them out in the first part of Infinity War would rock moviegoers to their very core, but a big move like this would be necessary to set Thanos up as a credible threat. Plus, one of The Avengers could easily will them back into existence in the second part in time for their inevitable third movie.