Batman despises guns and does therefore not use them (vulcan cannons or machine gun implacements on his vehicles [especially in the movies] non-withstanding), he uses batarangs and all kinds of high-tech gadgets instead, all of which appear to be really expensive.
This aversion of firearms of course originated from the murder of his parents via handgun right in front of him when he was a young boy.
This leads to my question:
Has anyone ever noticed that Batman does not use guns and tried to figure out Batman's civilian identity (or actually succeded it doing so) by guessing it comes from a very deep psychological issue, i.e. most likely childhood trauma.
Even in crime infested Gotham City, there cannot be that many incredibly rich men with traumata involving gun violence most likely in their childhoods.