[user104658]

It's a very decent piece of sci-fi but it's honestly not THAT good... I will obviously watch the sequels and hope that they're also enjoyable.

That said high-grossing doesn't often mean the world's best movies. I absolutely love the MCU and it's scope and ambition as a whole entity in movies is unparalleled - but as individual movies they're usually just "good action films", some simply mediocre, a couple that are genuinely stand-out movies in their own right (Winter Soldier for example is an excellent movie regardless of being part of the franchise).

But they gross so highly because of the franchise. Its not rally an indicator of quality.