I don't "need" one. I want one. I enjoy the comfort, convenience and recreational benefits associated with having one.
There are few things in this life that we absolutely need, and there are multitudes of things that we enjoy that are potentially very harmful to both the individual, and those around him/her.
Personal automobiles are not a necessity, and their production and use is arguably more damaging to the health of the inhabitants of this planet than any other single human invention.
Alcoholic beverages in any form are not a necessity, and are a factor in the deaths of countless persons each and every day worldwide.
Highly-processed, fat and carbohydrate laden, and low-nutrient value foods are not a necessity, and are a factor in a staggering, nearly epidemic, decline in public health over the last thirty years.
I don't NEED any kind of gun. But then again, I don't NEED a lot of things that I have.
The question here is whether or not society should be permitted to regulate individual behavior based upon tangible need and tangible harm. If true and tangible NEED relative to true and tangible HARM are the criteria by which behavior is to be regulated, then Big Macs, Toyotas, Bud Light and escalators should be much, much higher on the hit list than your gun.
The question of need, and the argument that need should dictate access, is both specious and HIGHLY hypocritical.