The fact is that we live in a country where we have the freedom to pursue our wants and we shouldn’t have to justify those wants to anyone else. If we let the discourse focus on the question of “need” we will have a much higher hill to climb with our fellow citizens than if we frame the question in terms of wants. Everyone can understand the concept of “want” and most people will admit that they likely want or have something that would be difficult to justify to someone who does not share that particular interest.
It’s not that I need a 100-round magazine. It just makes me happy.
Ask Barack about golf sometime. He’ll tell you the same thing.
Except I won’t ask you to pay for my security entourage to follow me to the gun store.