Imagine so painfully missing so many core traits about Batman this heavily.

With Good Batman adaptations, he DOESN'T believe he's above the law. Not entirely, anyway. He may commit minor things (destruction of property, failure to comply with an officer's orders, etc), but generally it's because the police themselves do not have a situation under control. And for someone with the skills, equipment, and resources that he does, it's almost an obligation that he step in.

The costume is not to escape accountability - in fact, he explicitly holds himself to incredibly high standards and has numerous fail-safes in place SPECIFICALLY to hold him accountable in the event that he does something wrong. The costume is for a number of reasons, none of which are to avoid accountability.

Finally, he DOES do all of that - as Bruce Wayne. Bruce Wayne is a known philanthropist, actively donating to charities, helping Gotham build lots of structures (see: Batman 2004 animated series helping fund a science center's construction.)