They did? What kind of things did they want?

Is Batman VS Superman perfect? No. It has flaws. And plot holes (like any movie, even a favourite of mine such as Back To The Future has plot holes). 

Doomsday is rather generic in it. Considering how effective Doomsday looked in Smallville, generic big alien was disappointing.

Also, not sure about Lex Luthor. Reminded me of these trendy millennial CEOs that don't wear ties, but wear flip-flops. I much prefer serious businessman Lex Luthor. Eisenberg's Luthor was unrecognisable to me. Gene Hackman and John Shea brought very different interpretations to the character, but they still felt like Luthor to me.

However, there was so much in the movie that I did enjoy, so much which made the hairs on the back of my neck stand up, especially when Superman threw that punch that Batman blocked. The memorable scenes in the movie far outweigh the flaws I've mentioned. Yes, it's all subjective, but I never understood the hate. 

I know the film tried to be a lot of things (a Superman sequel, a Batman film, a JLA prequel). There are things I'd have changed. But I thought it was a very good movie.