This isn't Marvel. Don't expect it and you'll be fine.

Rating: 9/10 (25 March 2016)

I don't really understand most of the reviews. Was the movie perfect? No. But I found it very enjoyable, worth the money, and I would see it again. Some of the critics are complaining about the level of destruction, but if you look at their reviews for Age of Ultron (which has a whole city flying into the stratosphere) you will find that they don't seem to mind it in Marvel movies.
DC is going in a different direction. Their tone is much more in line with Marvel's Netflix shows than their movies. People love Marvel's movies, the way the dialogue is written, the humor. This movie has none of that, and I think people are disappointed because they wanted that kind of writing for this movie.
The DC Movieverse is built on the reality that thousands, perhaps tens of thousands, of people died during the events of Man of Steel, something that the MCU hasn't completely acknowledged outside of their Netflix shows.
It's hard to write Tony Stark making a Spider-Man underwear joke when you just moments before talked about all the dead people.
So, this is what I will say. If you love Marvel movies because of their style and humor, be well aware that you will find none of that here. But if you go into this flick without preconceptions based on other franchises, you may walk out with your new favorite comic book movie, or at least one you are damn happy you saw.