I haven't read completely thru the whole thread. But here's my thoughts:
I'd keep my guns, TYVM.
I haven't given up my hand tools or knives. I didn't give up pen and paper when email came along. Technology that is dependent on a power source such as batteries can fail. What happens in the event of an EMP? My Glock will still work. My sooper dooper Star Trek phaser prolly won't.
And even if I didn't need to carry a gun any more, I'd still want to go target shooting at the range.