I've seen Endgame twice now. Endgame ties up the story began more than a decade ago in a very satisfactory fashion, and as such, my emotional investment in that story is now complete. I will continue to see MCU movies that i find interesting, something like the next Spider-Man or Guardians, but I doubt any will ever reach the pinnacle of anticipation that these last two Avengers movies did.
As such, my final rankings (sans all the great posters) ...
01. Avengers Infinity War
02. Captain America: The Winter Soldier
03. Avengers Endgame
04. Captain America: Civil War
05. Guardians of the Galaxy
06. Iron Man
07. The Avengers
08. Captain America: The First Avenger
09. Spider-Man: Homecoming
10. Thor Ragnorak
11. Doctor Strange
12. Avengers: Age of Ultron
13. Guardians of the Galaxy Volume 2
14. Ant-Man
15. Ant-Man and the Wasp
16. Iron Man 2
17. Thor
18. Iron Man 3
19. Black Panther
20. Captain Marvel
21. The Incredible Hulk
22. Thor: The Dark World