Bee, I'm not surprised that the Marvel-based movies do nothing for you. For me, it is a matter of expectations. Perhaps that is why so far, I have preferred the Marvel movies over the DC movies. And it derives from something that perhaps you would understand more intimately than some others. I'll digress just a moment before getting to the point. A series of movies that I greatly enjoyed was the Harry Potter series. They were bright and lots of fun and dark and sometimes tense - all of that at the same time. But I found them quite engaging. I also have enjoyed the Star Wars series and, to a lesser degree, the Star Trek series.
Now the point: The reason for me liking what I like but caring less for the other movies is the scripting. If you don't have a good STORY, how can you buy into the movie? If the characters are not written in an engaging style, how can you care for what happens to them?
I have had this discussion in life before I retired. Marvel has a whole library comic books (serialized graphic novels?) of socially aware plot lines that address racism (through the X-Men). They have touched more than once on feminism through some of the villains and their female heroines such as Sue Storm of the Fantastic Four and Jean Gray of the X-Men. Their characters have fleshed-out personalities. A literal TON of Marvel's comic books form a huge pool of source material that is great for an action movie. Dialog and action are already story-boarded and waiting to be brought to the big screen. And once Marvel had enough success to start making money, they attracted the attention of "The Mouse." Now look at how much money they are making, which in the entertainment industry is a reasonably good indicator of success. I guess you could call it the movie equivalent of a "best selling" book. Also, look at how many people they employ, which you can find by sitting through some of the "credits" trailers. The economic engine that is the comic-book-to-movie industry is thriving by any standard you could imagine.
Admittedly we are talking one specific genre, but it IS within the movie industry that is within the topic of this thread. And therefore I would not be surprised to find that some of Marvel's offerings will appear as someone's favorite recent flick.