Batman vs Superman

This was such a strange movie. First off, until someone told me gotham was meant to be chicago, I thought metropolis and Gotham were right next to each other, with the ease the characters traveled between them with. Wonder Woman was so awesome, I just wish she did more in the beginning of the movie. Superman was being super ridiculous and quite the hypocrite, because all his talk about vigilantes applied to him, as well. When it came down to the big Batman and superman fight, I couldn't figure out why superman didn't just say that lex luther had his mother. It would have stopped the fighting immediately. And why was Bat fighting Super man? Because the wheelchair guy blew himself up? Actually, it was because superman killed innocent civilians, not just criminals. Why did Lex Luther hate superman? Vigilante justice couldn't have been the sole season, because that is exactly what Lex Luther wound up doing. You don't frame a guy for all this stuff, dig up aliens, resurect things, all because you don't want aliens on the planet. Why was that politician lady distracted but her grandmother's ice tea right before getting blown up? Why didn't the movie address some of Batman's classism, only fighting the poor but not the corrupt one percent? What happened to Robin? Why was batman interested in Lex Luther in the first place? Who was that time traveling guy and how was he relevant to the story? This movie had great visuals, and lots of potential for Justice League, but as a stand alone movie it falls a little short.  It was very confusing, and a simple plot would've helped significantly. I just have so many questions.