What's up with all the negative reviews?

Rating: 8/10 (30 April 2018)

I don't get what all the negative reviews are about. People seem to dislike the elements of homour and/or the length of the film and/or there being too many sidestories to keep up with.
To adress the first critique: This particular brand of humour, with random jokes thrown into the movies to make it more lighthearted, is the whole reason the adaptation of Marvel movies from the comics have transitioned so well the past 10 years. If you look at the movies produced before the whole sucess story of the MCU: X-men last stand, the first 3 Spiderman movies, the fantastic four movie and so on, the one thing they all lacked was the humour. There has to be some kind of humour in superhero-movies, as well as some kind of self awareness, otherwise the movies come of as comletely lame. I mean, we have people in spandex running around and calling themselves pretty corny nick-names - it just can't be all seriousness and action.
As for the second complaint, ragarding the running time being too long, I don't think you can cram so many characters into one movie without making it at least 2+ hours long. Otherwise people would just say that it felt rushed instead.
Thirdly, I understand if the different characters and plot can seem too much if you haven't really kept up with any of the previous Marvel movies. But if you have, I see no problem in understanding eveything that goes on in the movie. They even make it clearer by writing in text on the screen where the story takes place.
I don't think this is a 10 star movie simply beause it's cut in half, there being a second part and all, but it surely deserves more than a 7 star rating.