I’ve heard this argument time and time again so I just want to say two things:
1. What’s wrong with having a legal gun? If you have a permit and you’ve taken the safety course so what’s the problem with walking around with it?
2. I always find it funny when people say “well I’ll look and see if he has Facebook.” It’s possible to completely hide your account so it’s not searchable unless you have the actual link. It’s also possible to have a generic profile picture (say, a flower) so you’d never know if this “Yehuda Goldstein” is the same Yehuda Goldstein you intend to go out with. True, it’s possible to see if this isn’t done, but just because you didn’t find one doesn’t mean (s)he doesn’t have one.