A tear-jerking finale to those who are familiar in the past MCU films. Hell, I'd probably hold back my tears even if I didn't see the other films. How they masterfully mixed humor into the equation is beyond me. Moreover, I can't help but feel in awe during the last minutes of the film.
This is the most satisfying film that Marvel Studios has ever released yet. It will probably take another decade for anyone to make a film as big as this.