Curious why you didn't like him in the first fight sequence?
I didn't buy that Batman couldn't inflict any damage on him during their first encounter in the sewers. Yeah, perhaps the blows from his punches weren't as strong as they were till the end, but Batman got some hits in. I know Batman's heart wasn't in it 100% and it had been 8 years since he was last active, but the ease of Bane's victory didn't feel real. Batman is literally on top of him at one point, POUNDING his face and chest in desperation and it has no effect on him. Fast forward later on where he's punching Bane in the face and his mask is starting to break.
Bane was just written in as this unstoppable, unbeatable force during that sequence, that part of the film. Did I want Batman to be unbeaten and invincible? No. I know the whole point of the scene is to "break Batman" and destroy his morale but I just didn't believe it coming from Bane.
That and his goofy "I'M THE VILLAIN, LOOK AT ME" lines,
"I AM DA LEAGUE OF SHADOOOOOOOWS"
"I WAS BOWRN IN DAHKNESS BETMEN" (right as he snatches Batman up despite being able to smell Batman coming)
Had Bane been his own man (the involvement with the LOS left a bad taste in my mouth. It felt like fan fiction that became reality), had his voice been more serious and threatening, I might have bought into him. To me he's one of the goofiest and least charismatic film villains I've ever seen. He's like Ivan Drago/Whiplash or something. It made me miss the Joker even more.
An argument could be made that you're not supposed to like Bane but, for me, a good villain is a likeable villain and one that you could identify with. On every level Bane fails to wow me. Visually, the characterization and his voice. A few moments like the ones I listed above are good, even great to me, but Bane as a whole fails to wow me. He's just there hamming up scenes with speeches and breaking necks. He's not imposing, scary, or freighting.
Any comparisons to Darth Vader or those that think he's as good or better than the Joker is insulting to me.