Overwatch is a fun game and all, but I find myself going back to each character's animated trailer more often than I actually play the game- because they're so much fun to watch that Blizzard should make an animated Overwatch movie.
In each trailer we get an idea of what each character is capable of, their motivations in life, and how they fit in to the overall story of Overwatch which many players simply skip over so they can get to the action.
If you enjoy animated shorts, and don't particularly care to play a multiplayer shooter with a bunch of people you don't know, then you're not missing a thing by skipping the game and watching all the trailers instead. Thanks GameCin!