What's your favorite MCU movie, and why?

[PAOerfulone]

Endgame - Because it absolutely lived up to my very high expectations to be the culmination of all the entire franchise. Now, the film definitely has its flaws and most of them relate to Time Travel. But it hit all the right notes in all the right places. There were character arcs that got satisfying conclusions like Steve and Tony burying the hatchet, the Banner/Hulk dynamic.
There were moments that got me laughing hard:

Spoiler!

Fat Thor; Starlord dancing like an idiot; Tony getting bitch-slapped by a door, courtesy of the Hulk. Ant-Man... just Ant-Man.

Moments of pure awesomeness:

Spoiler!

Traveling back to New York 2012 with Avengers 1; "Hail Hydra"; Cap vs. Cap; Thor getting Mjolnir (his hammer) back; CAPTAIN AMERICA IS WORTHY! (Holy Shit, that moment STILL gives me goosebumps!); And of course, the two moments that will go down as two of the greatest moments in cinema history:

"AVENGERS! ...Assemble."
"I. Am... Iron Man."

Moments of pure shock and/or heartbreaking sadness:

Spoiler!

"5 Years Later"; Black Widow's death; Iron Man's death; 

And moments of tear-jerking happiness and satisfaction:

Spoiler!

Tony talking to and hugging his dad; "I love you, 3,000." Cap finally getting his dance with Peggy; The end credits with the Avengers cast getting their role call with signature. My theatre applauded for Black Widow, Thor, and Captain America. They erupted in cheers for Iron Man.

Avengers: Endgame isn't just my favorite MCU movie, it may very well be my favorite movie, period.