I expected an OK-ish film, but with Ben Affleck as the weakest link. I was 100% wrong.
The movie was outright bad. The pacing problems from Man of Steel are back in full force, the script makes almost no sense and is riddled with holes, character motivations were erratic, Lex Luthor was so badly miscast and horribly written that it's an insult, etc. etc.
On the other hand Affleck was pretty damn good as Batman, I'm genuinely interested in a potential solo film from him. As long as they don't let Snyder anywhere near it.