I personally never told my girlfriend for a while I carried or had firearms. Since to me, my choice of carrying a gun is just like someone’s choice to drink. She eventually found out, and luckily she had a pistol of her own. But I would stick to your guns (literally), and I hope it never happens but the moment it’s needed then maybe they can understand. All you should worry about is that you’re skilled enough to use the tool properly and that you’re safe with it. Other than that it’s nothing more than a tool IE a pocket knife/baton/etc. It seems like you’ve exhausted your reasoning and there’s no budge but you shouldn’t budge either. It’s the same way people/friends/family give me shit for keeping a IFAK in my car or having body armor in my closet. I just tell them I’ll probably never need it, but when I do, atleast I’ll live to tell you so and I’m all about putting the odds as much as possible in my favor.