I know I am in the minority here but I really like Man of Steel. I like the dark gritty feel of Snyder's superhero interpretation which aligns with recent Batman series and other comic book movies like Watchmen, all of which I enjoyed. I think that Russel Crow and Costner did a great job in their roles and think that Cavill is a great superman. I am in my 40's and grew up with the original Superman movies but haven't really had the desire to go back and watch them again.
Though candidly speaking I don't go into movies looking to crap all over them and pick them apart. I try to enjoy they for what they are and what they bring to the table. If something is really bad then so be it but life is too short to spend it being overly critical and negative about everything.