Like I've
literally said in this thread already:
I would've been fine with (or at least more accepting of) all the fukking destruction and death if they bothered to show Superman at least trying to prevent/circumvent it. He doesn't have to succeed and save everybody all the time, but he should try. Hell, you could argue that is his biggest weakness (besides lolkryptonitewins), because he would give up his advantage in a fight to save a bystander's life.
All the destruction caused in the Smallville fight is because he took the fight there. That's on him.
He pummels Zod through numerous buildings in Metropolis without any regard for protecting the city. Everyone in those buildings is dead and he didn't give a fukk about it.
Because The Avengers movie clearly showed Cap out there saving people from the attack while the big guns dealt with the invading forces.