It seems like we've barely had time to get over the thrill of watching "Black Panther" before "Avengers: Infinity War" tumbles into theaters on April 27 as the "most ambitious crossover in history."

Indeed, "Infinity War" is what the entire Marvel Cinematic Universe — 10 years and 18 movies — has been building toward.

And for many, "Black Panther" has been the best of the bunch up until now. It is now the highest-domestic grossing superhero movie of all time.

But to me, "Black Panther" still isn't the MCU's best movie. That honor goes to 2014's "Guardians of the Galaxy," an insanely fun, surprisingly touching, and all-around great movie that never should have worked.

I understand why some people consider "Black Panther" the best of the best, and even see the arguments for other standout movies in the MCU, such as "Captain America: The Winter Soldier" or "The Avengers."

But which of those 18 movies is the best to me? Which one sticks with me personally? The answer is most certainly "Guardians of the Galaxy."

Below are 7 reasons why: