We (CCW-ers) only get upset about people knowing because then they raise a stink about it. Where I live, there is a huge proliferation of guns and hunting, so even if people knew they'd shrug and go about their day. In a major coastal city (say in California or the New England areas) everyone would flip a shit, call the cops on me, and accuse me of being a baby-killer.
Why not do both at the same time? Power draw. A microwave can take over half the available load on a standard household circuit. Most are wired for 15 amps before the breaker starts tripping. Heating elements are just as power-hungry, which is why you typically see electric stoves on a dedicated 240V, 20A circuit. I would guess most houses do not have the wiring to support this.
That's why responsible gun owners lock their guns up, not hide them. Furthermore, they educate and teach their children about the proper handling and use of firearms (which progresses from "don't touch and tell an adult" when they're very young to actual proper handling and usage when they have shown significant maturity and responsibility).
Child deaths by firearms accidents are usually the result of an adult being irresponsible with their guns, typically by leaving them accessible or by not following the Four Rules of Gun Safety. I would love to see parents be more responsible with their guns *period*, especially around their children.
With the jazz band I play in, we have a book full of a few hundred charts. When resorting them after a gig, I typically grab a small stack, sort it insertion style, set it aside, then do the same to another pile. Once a few piles have been done, they get merge sorted into a big pile. Big piles themselves are merge sorted, until all of my music is in order.