It's the Ultimate Build
Sometimes, when you think too hard about it looking back, it comes off as a little silly at times. But when you take a step back, it's pretty impressive to look at the Marvel Studios project as a whole. It's nothing that has ever really even been attempted before, much less more or less nailed on the first try. Each movie feeds into the next, and it's been happening since 2008. Avengers: Infinity War is arguably the ultimate culmination of everything that has happened since Iron Man, and that's pretty cool. Sure, the "phase" doesn't actually end until the next one, but still.