I don't know... I rewatched Man of Steel last week and enjoyed it a lot less than I did initially in the theater. I think there are a lot of silly lines, lots of trying too hard to be epic, that kind of thing. Lois Lane falls in love with Superman after having like two conversations with him (I know, he's ripped), and vice versa. We're supposed to care about Lawrence Fishburne and the other office workers running for their lives when they've had about 3 minutes of screen time up to that point.
I dunno. Maybe it doesn't deserve to be totally trashed, but it's not very good either. I guess you can say that about most Zack Snyder movies. But rather than just being a passable superhero flick, it's the springboard for an entire franchise of characters, many of whom have never been heard of before by audiences.
But I digress, I think we're all mostly in agreement here - people are right to be hesitant.
(For fun, here's the
Honest Trailers for Man of Steel.)