Batman and Robin (1997) - 5 questions

Question: Why does Batman override the controls to Robin's motorbike when they're pursuing Freeze? Robin says he can make it, and yet Batman still prevents him from doing it. Why? Robin's a professional circus performer and Batman knows that; if Robin knows he can make the jump, then Batman should have allowed him to make the jump.

Answer: Because Batman has been over protective of Robin the whole time and is not entirely sure that Robin is not a "reckless youth". The whole point is that Batman doesn't know that if Robin says he can make the jump, that he can make it. That's why at the end when Batman trusts Robin's judgement that he can do what he says, Robin thanks him.

Question: At the end, when Batgirl punches Poison Ivy, making her fall into that huge plant, why did it curl up and capture her, when it's her plant and she can control it?

Answer: Even the greatest animal trainers still get mauled sometimes (i.e. Siegfried and Roy). It's quite likely that the plant didn't turn down a possible meal when she literally fell into its mouth.

Question: Is there any logical explanation for the lavish costumes used by the characters in the Shumacher films? For example, Poison Ivy always wears lavish outfits (ludicrous tights and heels and multi-thousand-dollar-looking outfits and robes); or Two-Face from "Forever" and his split suits). I know it is for the style, but is there any realistic explanation as to how this could happen?

Answer: You answered your own question. "Realistic". This is a movie trying to look like a comic book. Comic outfits are drawn on, no seams, no underwear/bras, etc. So live action costumes are just going to look odd.

Question: What happens to each of the women at the end of the movies? Each movie has a completely different love interest, we're left to believe that they have bonded and are in love and set for a happy ending, but by the next movie, that woman is gone with no explanation and he's chasing after someone new.

Answer: Bruce Wayne is notorious for not being able to maintain a relationship for long. The relationships likely fall apart for various reasons, some relating to him being Batman.

Question: Why didn't Val Kilmer play Batman for this movie? Was he not offered the part? Did he not want it? What happened?

Answer: Kilmer wanted to reprise the role, but couldn't because he was already committed to The Saint (1997).