Superman Returns was really disappointing. It had its moments but all too few of them. Routh was adequate as Clark/Superman, but both he and Kate (miscast) Bosworth, who played Lois looked too young. I didn't buy her as a mother, at all.
The plot with Lex Luther (again!) was ridiculous and there was far too little of Superman being Super. It was quite depressing (which a Superman film should not be) and long-winded and for the most part it just felt like a retread of Donner's Superman. The only really new idea they added was the addition of Superkid and that didn't feel right at all.
Plus, many things about the film were flat out ridiculous:
Lex's land plot.
Both Clark and Superman disappear for 5 years, at the same time and no one makes the connection when they both return, again, at the same time?
And the fact that Superman would take off for 5 years in the first place, without even telling anyone was completely out of character.
Lois winning a Pulitzer Prize for an article about why the world doesn't need Superman.
Superman not even considering whether the boy might be his. Is his maths a little rusty?
I could go on...but I won't.