Entertaining, but also disappointing

Rating: 5/10 (29 April 2019)

Attention: this review contains spoilers.
This is a very entertaining movie, very funny, and with many references to other movies in the franchise.
But it is also a big disappointment. Since last year's snap and the reference to the time vortex in "Ant-Man and the Wasp" it was absolutely clear that we would see a time traveling story. These are usually the best, e.g. "Back to the Future", "Terminator" (especially when we ignore the paradoxon), or "Star Trek VI - The Voyage Home". Still, even as the problems with causality in time travels are discussed by the Avengers team, only a few minutes later in the movie these thoughts are kind of ignored. So, actually there is not one, but several paradoxons. Being a huge fan of of well aligned time traveling stories, I really cannot take this movie serious, even from a MCU fan perspective. Here you can just take people out of their time, even let them die, and their future counterparts still exist. If it would be so easy, there would have been so many more solutions to the snap problem from the start. This was really disturbing.
Further critical thoughts:

If Peter Parker's friends are back and everything is at the same age, then everyone from the Spidey movies has to have been snapped.
Peter Parker is at the same funeral as Nick Fury. The trailer for the upcoming movie shows how they meet the first time. Is "Far from home" set in the past? Then why would Happy Hogan point out that Spidey is now on its own.
Fat Thor was funny for a very short moment in the movie. Later it is just annoying. And this is not me having a problem with a fat hero. But it is much more about that senseless ending for Thor. Through Thor 1-3 we saw him evolve to be the leader who is needed as a successor of Odin. And now as his people is decimated, they just blend in as fishers, there is nothing to see from Asgardian culture or technology, he looks like Lebowski and finally just says: Well, I am off. How can that be Thor who had to evolve and show his worthiness?!? It's a terrible twist on this major character.
It is no surprise that Iron Man's and Captain America's story arcs came to an end. it resembles comic story arcs from Civil War and Infinity War. And also contracts expired. Nevertheless, it was very obvious as well, because they really reached the end of their personal story arcs. I just expected Cap to be the one snapping.
While we are at it: So, the snap is something very, very bad. Unless you do it against your enemy, meaning the bad guys. Then it's okay, just to erase everyone from existence.
And about the stones. Do you remember when we saw in "Guardians of the Galaxy" that hardly anyone would be able to hold them in the hand, without being destroyed by their power. Remember Starlord and the others working together for that purpose and him only being able, because he is a half-god? Well now, cheer up. It's happy stones week at McMCU. So everyone, can just take the stones and carry them around. Ehm ...
Loki leaving with the Tesseract. Yes, another paradoxon. But necessary for the cash cow of Disney in order to make a Loki TV series.
The death of Black Widow. Just sad. But also a little far stretched with this battle who want to die more for the other.
The mind stone: Hmm, should we go back to the aftermath of the battle of New York in order to get the scepter or could we just go to some other time in the future when Vision is around, take enough time and get the stone without killing him? Let's do the first in order to free Loki and save the cash cow for Disney, as mentioned before. Yeah, that makes sense.
Again the mind stone: Yes, everything has to be returned to its original place by Cap. Would have been great to see how makes a new scepter and puts the mind stone back in place. The same is true for the Tesseract and so on.
The soul stone: So, Cap travels to Vormir again, returns the stone, but gets nothing in return? Just in order to keep the time line in order, which has been screwed up by many other things like killing all the bad guys from the past or Nebula?

This review is now much longer than intended and actually I have many, many more points. I also liked a lot a lot about this movie, but these and further points are really killing it for me. Perhaps after time I will come to accept that this movie is the end of the Avengers, but I would have preferred a shorter version with a story that makes more sense instead of three hours overloaded with too many references and self-indulgement about the previous movies in the franchise. In the end, it felt a little bit as if I had seen one of these J J Abrams movies or series, where you are hyped until you get to the ending and just see that too many things didn't make sense after all.