Homuhater? thats new. Besides we all know Mami is best meguca. Calling it, she will best Homucifer even without needing to ascend to a god-like level. (though possibly will gain a slight power-up)
Anyway, people don't like Homura now because of her rationality. She put her own selfish desires and wants before others. Which goes from affecting one life to affecting the entire universe. And then for her to succumb to her own lust and possesive and abusive behavior is the complete opposite of what she originally set out to be. Her prime was Timeline 2 and then she went down hill from there.
I wouldn't say she deserves the hell she as well as others claim she rules over, but she will end up getting what she deserves, take that how you will.