I've seen this movie a number of times that my feelings haven't change: I really like it. I'm very happy with what we got, and I'm also very happy that I'm not getting a repeat of Superman Returns and getting bored with each reviewing. I like Man of Steel, and will continue to defend and support it
That said, I still do not, for the life of me, understand any or all of the criticisms. It just seems like they're nitpicks, or not really flaws at all with the only real problem is themselves, or people believing the Reeve Superman was THE Superman and not just a version which MOS is also, or fans and critics place Superman on a pedestal because he's perfect to them and if the movie shows one sign against it they attack it, or if they don't like Zack Snyder, David Goyer, or even Chris Nolan, they'll hate their movie even if it's good.
Man of Steel is a very good Superman movie, because it is and feels like a Superman movie (something we didn't get with SR, nor have we gotten since either STM or SII). It also made me feel good in the end. I will continue to defend and support it.
P.S. I also like to point out how the filmmakers didn't alter Superman's character in MOS. He is still idealistic, and wants to help people, something that he wanted to do since he was a kid, and no alienation or bullying from other classmates changed that. The only thing that was "dark" that wasn't the villains was the cynical world he lived in, which we are also living in this very moment. Another thing, just to throw it out there; I'm glad that they didn't change their minds over Superman killing Zod. Supes wasn't a murderer, he was doing the one thing he didn't want to do, but had to do to save the world. I'm glad this wasn't changed because if they did, then they would've been playing it safe, and thus their ideas and vision would've been affected. But no, they did it because it served the story, and they were going to do it no matter what backlash they faced regardless of the reasons they had. They didn't play it safe; when was the last time you saw that in movies today?