I don't hate Superman, nor do I think that he is the most powerful creation ever. I can easily name a dozen characters easily more powerful than Superman. Excluding actual gods, people who are stronger include: Sentry, Thanos, Brainiac, Amazo, Icon, Doctor Who, Doomsday, Doctor Doom, Megan Braddock, etc. In addition to having the loosest interpretation of what empathy really means, the last one conquered Hell though the power of good thoughts and positive thinking. When Superman can do that, I'll change my mind about whose stronger.
The thing is that he is a difficult character to write for. Character development is about overcoming conflict? How can you put flaws into the perfect man? He is either going to be so good that he will not hurt a fly, so trusting that he will be easily fooled, or so naive that he can easily be manipulated.
Even this new 52 iteration of Superman is kind of a boring read. He does not belong in this world, so he does not even try to fit in? He just protects it and nothing else. That's got to be the most silly cop out way of doing things because it only makes sense in that 90s cynical sort of way. What's keeping him from crossing the line and enslaving the planet, like the Authority? You know, atleast before when he was raised by Ma and Pa Kent, he understood that humanity is flawed and needs to be set on the right path. This iteration of Superman is inherently distrustful of people, so what is preventing him from enslaving the world?
The best use of Superman I've seen recently is to recast him as something of an absentee father figure and as someone that is not really ready to be one. In Young Justice, he is conflicted by the existence of Conner. He wants nothing to do with his teenage clone, so he pawns the responsibility off onto the rest of the league, mostly Batman, Black Canary and to an extent Captain Marvel. Throughout the first season, Superman did his best to ignore the boy, only talking to him a few times, making excuses to get away from him, and ignoring him when they are in the same room. It was only at the end of the season that Superman made an attempt to talk to the boy, much to their mutual satisfaction.