Marvel is knowm not only for its iconic superheros and villians, but for its action packed material shown in the comics and movies. Marvel Studios has entertained millions of people worldwide since 2008, with heroes getting their own movie and working together in others. There are frequent debates on which Marvel Movie is the best and why it is. In my opinion, I argue that Avengers Infinity War is the best Marvel Movie (Waring! Spoliers Ahead!)
Marvel's Infinty War has a ton of action scenes from the start to the climatic but gloomy end of the movie. At the start, you see Iron Man, Spider Man, and Doctor Strange fighting against the Black Order. Throughout the movie You see all of the Avengers at different planets fighting mutiple enemies trying to defend planet Earth. This is also backed up by amazing cinematography as well.
Thanos up to this date is one of the best villians the MCU has displayed. Infinity War really showcased how powerful of a villian and conqueror he was. He was ruthless and determined to find and use the infinty stones for his own agenda. Thanos even sacrifiiced one of his "daughters" Gamora to recive the soul stone.
Near the End of the movie, the Avengers squared off against Thanos and his allies in Wakanda. To fast fowrard a bit, Thanos obtinaed all of the Infinity Stones and did the infamous snap. That snap erased half of the population of the entire universe. It was the first time we've actually seen the Avengers defeated, or feel defeated. It was a nice change of pace from the usual good guys win and bad guys lose trope. It was a great ending to lead on to Endgame.