The reason for owning anything at all should be "because I want to".

Because freedom. Everyone should be free to do as they please so long as it does not harm anyone or infringe upon their rights.

Some people claim that they have a right to be safe, therefore other people around them shouldn't have guns. The problem with that is me owning a gun doesn't make my neighbors unsafe. Me carrying a gun in public doesn't reduce anyone's safety - as long as it sits in its holster. The part that is unsafe about carrying is already illegal. You can't just pull it out and start waving it around.

There's hundreds of pages of firearms laws already. Actions should be illegal, not objects.