In a cinematic universe as vast as the MCU, with so many story lines, sub plots, and unfinished character arcs, it would be simply impossible to answer every single question hanging over the franchise. From seemingly smaller, less significant questions that may make a much bigger ripple in the wider universe, to huge questions we know will be resolved eventually, but are too impatient to wait for the answers, the MCU holds countless unsolved mysteries.
This is no bad thing at all, as it allows us as fans to look deeper into the franchise and try to figure out the secrets we haven't been told. We can make theories based on the tiniest clues we've found in the past 23 movies, make huge assumptions based on the source material, and everything in between.
In some ways, this is just as much fun as actually watching the movies themselves. At the very least it adds another layer to the viewing experience, as we're waiting to see if we were right all along.
Some of these either make way too much sense to be ignored, or would be so amazing if they came true we can't help but hope. Either way, there are plenty of theories that look at the biggest mysteries in the MCU and render them, well, not so mysterious after all.
This standard nerd combines the looks of Shaggy with the brains of Scooby, has an unhealthy obsession with the Marvel Cinematic Universe, and is a firm believer that Alter Bridge are the greatest band in the world.