To say that the Avengers Initiative worked would be a wild understatement. Without Earth's Mightiest Heroes, who knows what would have happened, not only to the planet, but to the entire Marvel Cinematic Universe?
For a start, Loki would have easily taken over Earth with the Chitauri, handing the Tesseract over to Thanos, helping the Mad Titan on his way to destroying half the universe. The team has faced terrible odds and foes over the years, and have always stood firm to protect the world. This, however, does not mean that they are perfect.
Since the team was established with the original six in 2012, there have been a lot more names added to the Avengers roster. During the fight with Ultron, the Maximoff twins, War Machine, Falcon, and Vision were all added to the ranks, followed by Spider-Man in Infinity War, and Captain Marvel, Nebula, Rocket, Okoye, and Ant-Man in Endgame.
Most of these characters have made mistakes and bad decisions during their time with the team - some of which are far worse than others - and that's without even mentioning how the original six haven't always led by example either...
This standard nerd combines the looks of Shaggy with the brains of Scooby, has an unhealthy obsession with the Marvel Cinematic Universe, and is a firm believer that Alter Bridge are the greatest band in the world.