I didn't touch on that because I thought it was the worst analogy ever and the fact that others didn't mention it just re-enforced that.
But then there was you!
The more correct analogy would be one where I have guns and I hear another guy in my neighborhood is trying to get guns to defend his home so I slash his tires to inhibit his gun-funding by keeping him from going to work, if he continues down this path of potential self-defense, I just grab my guns before he has any and break into his house and begin "liberating" him with lead.
Uh, you're the one who thinks proliferation of nuclear weapons is fair.