The last time I went to a movie was “Iron Man” in 2008...
Haven’t missed anything...
If they had just stopped there, both would have had a lasting legacy. But no.... Movie studios need to make a dozen sequels (IronMan 2&3, Captain America 2&3, 4 Avengers movies, plus they show up in other Marvel movies....) and completely milk the franchise dry until people are sick to death of seeing their faces on-screen.