FINAL WARNING, SPOILERS BELOW!
First off, holy shit. I mean, fuuuuuuuuuuuuck! I didn't want the movie to end. I'm not satisfied, I want more! It was a damn fine movie: funny, exciting, suspenseful, even heartfelt. So far the Captain America movies have been the better of the Avengers series, in my opinion. Granted, the first Cap movie was the origin story, but Winter Soldier? Fuck the hell yes. And Civil War is no different.
First off, the biggest thing for me was the action. I expect a lot from superhero movies, and Civil War delivers. The fight choreography was both simple and spectacular. I especially like that we really get a feel for the full spectrum of abilities in our super soldiers. There's a scene where Bucky is running away on foot from both Black Panther and Cap on a busy road in Germany. These guys are running faster than the cop cars that are also chasing them. Not only that, but we see them fighting each other throughout the entire chase. So we aren't just seeing their physical might, but the sheer amount of brainpower and concentration it takes for them to keep track of everything going on around them. And that's just one example.
Character relationships and interactions are another big point for me, and I have a lot of problems with the way things were dealt with in Age of Ultron. Civil War, while not fixing a lot of Joss Whedon's...decisions to make certain heroes OOC(out of character), we see a distinct return to Marvel canon. We again see the deep friendship between Hawkeye and Black Widow, but we also see Hawkeye's mentor relationship with Scarlet Witch, first seen in AoU. Black Widow showcases none of the strange and out-of-character lovelorn/lovesick behaviors of AoU, and emphasises her martial prowess, especially in hand-to-hand combat. It's fucking sick guys. Another nod to canon is the building relationship between Scarlet Witch and Vision, though as a side note, Vision looks ridiculous in the civilian clothes they put him in. I mean, come on. They made him look like a complete toolbag.
It was incredibly interesting/funny to see the relationship between Cap and his two besties, Falcon and Bucky, and the way they interacted with each other. We truly see the differences in the way Cap and Falcon interact versus Cap and Bucky. Not only that, but the ways Bucky and Falcon seem to almost resent each other for Cap's friendship with the other. In fact, one of the funniest and most poignant scenes in the whole movie took place in a small VW Beetle or some such car. Bucky, in the backseat, tersely asks Falcon to move his chair further forward, to which Falcon replies, "No." Bucky, glaring, then scooched over to the driver's side of the backseat. Falcon then claims to hate Bucky. A few moments later, Cap is (finally) smooching Agent 13(Another canon relationship!) while Falcon and Bucky both unknowingly have the same reaction: A smug grin and a nod towards their sometimes-socially-awkward friend. It was a funny, beautiful thing.
Honestly, I could go on and on about the things I loved about the movie: The surprise appearance of Martin Freeman (which Emma and I both simultaneously squealed, earning several glares); The return of General Ross, as the Secretary of State who enforces the Sokovia Accords, and how he hasn't learned a fucking thing since The Incredible Hulk(2008); Hawkeye being the one to verbal rip into Tony Stark and his stupid smug face(I'm not a fan. However, RDJ? we're cool). But I don't think Emma would let me(omfg, when Cap and Bucky are passing the shield to each other while beating the ever loving shit out of Ironman, holy SHIIIIT!). Suffice it to say, I have no legitimate complaints. I am extremely happy with this movie. Full stop.
Can't wait to see if the next one in the franchise matches up.