Explain to me then, how it is that you think that a person with a firearm is going to suddenly not feel any fear. Do soldiers charge into machine gun fire without hesitation because they themselves are armed? How is a person with cerebral palsy reasonably expected to wield a firearm?

I believe you should have the right to own and carry the firearm that works best for you, if you want to. But a gun isn’t a magical talisman that will protect you simply by it’s presence.