...but if a person comes up to me and try's to use the intimidation card, I'll give him 15. 15 rounds pointed straight at his face. ...
Clearly that is a disproportionate response.
There's clearly more than one opinion on appropriate response. Whatever your opinion is, I suggest thoroughly running the scenario(s), just as you would in a shooting scenario. Remaining safe and alive with your property intact while being less than friendly with a good guy beats being hurt, dead or having your property stolen while being repeatedly courteous to a bad guy.