Re: In hindsight what changes would you do
Bane will do anything to do "what's necessary". He even calls himself "necessary evil". So yes, he's willing to harm children, and indeed intends to slaughter millions of them. That doesn't mean he takes any pleasure in that side of his duty.
That's the difference between him and The Joker. The Joker would push a baby carriage into the street just to watch it get hit by a truck, and he'd have a good laugh about it.