3.5 years, but I get where you're coming from.
Endgame is a different kind of event film imo. It's not the new film on the block that everybody is suddenly talking about like Jaws or Titanic where the interest is driven by word of mouth.
Everybody who saw Endgame (and that's an enormous 'everybody') was already invested and going to see it. It wasn't a film whose mass attendance was the result of its own crazy word of mouth. It's a film whose crazy box office was the result of films that expertly fed the hype machine leading into it.
It wasn't the same kind of event film that Avatar or Titanic or the original Star Wars was.
I was an MCU superfan and skipped Endgame in theaters.