After the events of Avengers: Endgame, Steve Rogers, also known as Captain America, made a pivotal decision to return the Infinity Stones to their respective timelines. Instead of returning to the present, he chose to stay in the past and live a full life with Peggy Carter.
In the final scenes of Endgame, we see an elderly Steve Rogers sitting on a bench, having lived a long and fulfilling life. He passes on his shield to Sam Wilson, indicating that he has chosen to retire from his role as Captain America and entrusts the legacy to a new hero.
This decision marks a significant character development for Steve, as he finally embraces a life outside of being a soldier and a hero, finding personal happiness and closure.
Pro tip: The implications of Steve's choice continue to resonate in the Marvel Cinematic Universe, particularly in the series The Falcon and the Winter Soldier, where Sam Wilson grapples with the mantle of Captain America.